113121212022 has 96 divisors (see below), whose sum is σ = 301873336128. Its totient is φ = 29812727808.

The previous prime is 113121212003. The next prime is 113121212063. The reversal of 113121212022 is 220212121311.

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

It is a junction number, because it is equal to n+sod(n) for n = 113121211986 and 113121212004.

It is a congruent number.

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, 2323158 + ... + 2371350.

It is an arithmetic number, because the mean of its divisors is an integer number (3144513918).

Almost surely, 2^113121212022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113121212022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150936668064).

113121212022 is an abundant number, since it is smaller than the sum of its proper divisors (188752124106).

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

113121212022 is a wasteful number, since it uses less digits than its factorization.

113121212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49654 (or 49651 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 113121212022 its reverse (220212121311), we get a palindrome (333333333333).

The spelling of 113121212022 in words is "one hundred thirteen billion, one hundred twenty-one million, two hundred twelve thousand, twenty-two".