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1011111001101 = 32195912929831
BaseRepresentation
bin11101011011010101110…
…10010111110000001101
310120122212001201202121100
432231222322113300031
5113031223404013401
62052255321453313
7133023162463155
oct16555272276015
93518761652540
101011111001101
1135a89a889533
12143b63041239
13744691b90c6
1436d1bd6d765
151b47be2eb86
hexeb6ae97c0d

1011111001101 has 12 divisors (see below), whose sum is σ = 1537361756320. Its totient is φ = 638596421640.

The previous prime is 1011111001099. The next prime is 1011111001129. The reversal of 1011111001101 is 1011001111101.

It is not a de Polignac number, because 1011111001101 - 21 = 1011111001099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011111001151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2956464745 + ... + 2956465086.

Almost surely, 21011111001101 is an apocalyptic number.

It is an amenable number.

1011111001101 is a deficient number, since it is larger than the sum of its proper divisors (526250755219).

1011111001101 is a wasteful number, since it uses less digits than its factorization.

1011111001101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5912929856 (or 5912929853 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 1011111001101 its reverse (1011001111101), we get a palindrome (2022112112202).

The spelling of 1011111001101 in words is "one trillion, eleven billion, one hundred eleven million, one thousand, one hundred one".

Divisors: 1 3 9 19 57 171 5912929831 17738789493 53216368479 112345666789 337037000367 1011111001101