113210110021 has 4 divisors (see below), whose sum is σ = 113214917952. Its totient is φ = 113205302092.

The previous prime is 113210110019. The next prime is 113210110043. The reversal of 113210110021 is 120011012311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120011012311 = 19 ⋅6316369069.

It is a cyclic number.

It is not a de Polignac number, because 113210110021 - 2¹ = 113210110019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113210109983 and 113210110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113210110061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2368471 + ... + 2415796.

It is an arithmetic number, because the mean of its divisors is an integer number (28303729488).

Almost surely, 2^113210110021 is an apocalyptic number.

It is an amenable number.

113210110021 is a deficient number, since it is larger than the sum of its proper divisors (4807931).

113210110021 is an equidigital number, since it uses as much as digits as its factorization.

113210110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4807930.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 113210110021 its reverse (120011012311), we get a palindrome (233221122332).

The spelling of 113210110021 in words is "one hundred thirteen billion, two hundred ten million, one hundred ten thousand, twenty-one".