113211222010021 has 4 divisors (see below), whose sum is σ = 113378446858572. Its totient is φ = 113043997161472.

The previous prime is 113211222009971. The next prime is 113211222010097. The reversal of 113211222010021 is 120010222112311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 53354478492225 + 59856743517796 = 7304415^2 + 7736714^2 .

It is a cyclic number.

It is not a de Polignac number, because 113211222010021 - 2³⁵ = 113176862271653 is a prime.

It is a super-2 number, since 2×113211222010021² (a number of 29 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 (113211222010121) 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 3 ways as a sum of consecutive naturals, for example, 83612423260 + ... + 83612424613.

It is an arithmetic number, because the mean of its divisors is an integer number (28344611714643).

Almost surely, 2^{113211222010021} is an apocalyptic number.

It is an amenable number.

113211222010021 is a deficient number, since it is larger than the sum of its proper divisors (167224848551).

113211222010021 is an equidigital number, since it uses as much as digits as its factorization.

113211222010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167224848550.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 113211222010021 its reverse (120010222112311), we get a palindrome (233221444122332).

The spelling of 113211222010021 in words is "one hundred thirteen trillion, two hundred eleven billion, two hundred twenty-two million, ten thousand, twenty-one".