113121120210 has 96 divisors (see below), whose sum is σ = 317172091392. Its totient is φ = 25745207040.

The previous prime is 113121120199. The next prime is 113121120221. The reversal of 113121120210 is 12021121311.

It is an interprime number because it is at equal distance from previous prime (113121120199) and next prime (113121120221).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 113121120210.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 177375 + ... + 507645.

It is an arithmetic number, because the mean of its divisors is an integer number (3303875952).

Almost surely, 2^113121120210 is an apocalyptic number.

113121120210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 113121120210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158586045696).

113121120210 is an abundant number, since it is smaller than the sum of its proper divisors (204050971182).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

113121120210 is a wasteful number, since it uses less digits than its factorization.

113121120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330528 (or 330521 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 113121120210 its reverse (12021121311), we get a palindrome (125142241521).

The spelling of 113121120210 in words is "one hundred thirteen billion, one hundred twenty-one million, one hundred twenty thousand, two hundred ten".