113153210021 has 8 divisors (see below), whose sum is σ = 114523800384. Its totient is φ = 111782793600.

The previous prime is 113153210017. The next prime is 113153210063. The reversal of 113153210021 is 120012351311.

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 113153210021 - 2² = 113153210017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 113153209975 and 113153210002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113153213021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1672565 + ... + 1738901.

It is an arithmetic number, because the mean of its divisors is an integer number (14315475048).

Almost surely, 2^113153210021 is an apocalyptic number.

It is an amenable number.

113153210021 is a deficient number, since it is larger than the sum of its proper divisors (1370590363).

113153210021 is an equidigital number, since it uses as much as digits as its factorization.

113153210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86971.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 113153210021 its reverse (120012351311), we get a palindrome (233165561332).

The spelling of 113153210021 in words is "one hundred thirteen billion, one hundred fifty-three million, two hundred ten thousand, twenty-one".