21032311122113 has 8 divisors (see below), whose sum is σ = 22411349883432. Its totient is φ = 19669032804096.

The previous prime is 21032311122107. The next prime is 21032311122191. The reversal of 21032311122113 is 31122111323012.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3348797520784 + 17683513601329 = 1829972^2 + 4205177^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 21032311122113 - 2³⁰ = 21031237380289 is a prime.

It is a super-2 number, since 2×21032311122113² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21032311122013) 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 7 ways as a sum of consecutive naturals, for example, 3940108070 + ... + 3940113407.

It is an arithmetic number, because the mean of its divisors is an integer number (2801418735429).

Almost surely, 2^{21032311122113} is an apocalyptic number.

It is an amenable number.

21032311122113 is a deficient number, since it is larger than the sum of its proper divisors (1379038761319).

21032311122113 is a wasteful number, since it uses less digits than its factorization.

21032311122113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7880221651.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 21032311122113 its reverse (31122111323012), we get a palindrome (52154422445125).

The spelling of 21032311122113 in words is "twenty-one trillion, thirty-two billion, three hundred eleven million, one hundred twenty-two thousand, one hundred thirteen".