113212212020 has 48 divisors (see below), whose sum is σ = 251663448960. Its totient is φ = 42706505856.

The previous prime is 113212212013. The next prime is 113212212041. The reversal of 113212212020 is 20212212311.

It is a super-2 number, since 2×113212212020² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 113212212020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2244752 + ... + 2294631.

It is an arithmetic number, because the mean of its divisors is an integer number (5242988520).

Almost surely, 2^113212212020 is an apocalyptic number.

113212212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113212212020 is an abundant number, since it is smaller than the sum of its proper divisors (138451236940).

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

113212212020 is a wasteful number, since it uses less digits than its factorization.

113212212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4539464 (or 4539462 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 113212212020 its reverse (20212212311), we get a palindrome (133424424331).

The spelling of 113212212020 in words is "one hundred thirteen billion, two hundred twelve million, two hundred twelve thousand, twenty".