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11211201108 = 22321911630483
BaseRepresentation
bin10100111000011110…
…10101101001010100
31001221022212000200200
422130033111221110
5140430031413413
65052250540500
7544552431342
oct123417255124
931838760620
1011211201108
114833481368
12220a737730
131098904113
14784d6a992
154593ac573
hex29c3d5a54

11211201108 has 36 divisors (see below), whose sum is σ = 28487816448. Its totient is φ = 3717498960.

The previous prime is 11211201103. The next prime is 11211201109. The reversal of 11211201108 is 80110211211.

11211201108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11211201103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 808366 + ... + 822117.

Almost surely, 211211201108 is an apocalyptic number.

11211201108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11211201108 is an abundant number, since it is smaller than the sum of its proper divisors (17276615340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211201108 is a wasteful number, since it uses less digits than its factorization.

11211201108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630684 (or 1630679 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11211201108 its reverse (80110211211), we get a palindrome (91321412319).

The spelling of 11211201108 in words is "eleven billion, two hundred eleven million, two hundred one thousand, one hundred eight".

Divisors: 1 2 3 4 6 9 12 18 36 191 382 573 764 1146 1719 2292 3438 6876 1630483 3260966 4891449 6521932 9782898 14674347 19565796 29348694 58697388 311422253 622844506 934266759 1245689012 1868533518 2802800277 3737067036 5605600554 11211201108