113123122002 has 96 divisors (see below), whose sum is σ = 272596746240. Its totient is φ = 33615790560.

The previous prime is 113123122001. The next prime is 113123122027. The reversal of 113123122002 is 200221321311.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (113123122001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2939199 + ... + 2977437.

It is an arithmetic number, because the mean of its divisors is an integer number (2839549440).

Almost surely, 2^113123122002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113123122002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (136298373120).

113123122002 is an abundant number, since it is smaller than the sum of its proper divisors (159473624238).

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

113123122002 is a wasteful number, since it uses less digits than its factorization.

113123122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38548 (or 38545 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 113123122002 its reverse (200221321311), we get a palindrome (313344443313).

The spelling of 113123122002 in words is "one hundred thirteen billion, one hundred twenty-three million, one hundred twenty-two thousand, two".