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11221200021 = 326113143239
BaseRepresentation
bin10100111001101010…
…11110110010010101
31001222000200000121210
422130311132302111
5140440111400041
65053245132033
7545033424603
oct123465366225
931860600553
1011221200021
114839090729
122211b5a019
13109a9c5335
14786410873
1545a1d5016
hex29cd5ec95

11221200021 has 8 divisors (see below), whose sum is σ = 14962277440. Its totient is φ = 7480461312.

The previous prime is 11221200007. The next prime is 11221200043. The reversal of 11221200021 is 12000212211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11221200021 - 25 = 11221199989 is a prime.

It is a super-2 number, since 2×112212000212 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221200061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6720 + ... + 149958.

It is an arithmetic number, because the mean of its divisors is an integer number (1870284680).

Almost surely, 211221200021 is an apocalyptic number.

It is an amenable number.

11221200021 is a deficient number, since it is larger than the sum of its proper divisors (3741077419).

11221200021 is a wasteful number, since it uses less digits than its factorization.

11221200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169355.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11221200021 its reverse (12000212211), we get a palindrome (23221412232).

The spelling of 11221200021 in words is "eleven billion, two hundred twenty-one million, two hundred thousand, twenty-one".

Divisors: 1 3 26113 78339 143239 429717 3740400007 11221200021