201231112020 has 48 divisors (see below), whose sum is σ = 565804673280. Its totient is φ = 53437100416.

The previous prime is 201231111997. The next prime is 201231112031. The reversal of 201231112020 is 20211132102.

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

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, 7002087 + ... + 7030766.

It is an arithmetic number, because the mean of its divisors is an integer number (11787597360).

Almost surely, 2^201231112020 is an apocalyptic number.

201231112020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201231112020 is an abundant number, since it is smaller than the sum of its proper divisors (364573561260).

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

201231112020 is a wasteful number, since it uses less digits than its factorization.

201231112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14033104 (or 14033102 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 201231112020 its reverse (20211132102), we get a palindrome (221442244122).

The spelling of 201231112020 in words is "two hundred one billion, two hundred thirty-one million, one hundred twelve thousand, twenty".