20113212020 has 48 divisors (see below), whose sum is σ = 46209744000. Its totient is φ = 7292910720.

The previous prime is 20113211927. The next prime is 20113212037. The reversal of 20113212020 is 2021231102.

It is a happy number.

It is a super-2 number, since 2×20113212020² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20113211986 and 20113212004.

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, 54200 + ... + 207759.

It is an arithmetic number, because the mean of its divisors is an integer number (962703000).

Almost surely, 2^20113212020 is an apocalyptic number.

20113212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20113212020 is an abundant number, since it is smaller than the sum of its proper divisors (26096531980).

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

20113212020 is a wasteful number, since it uses less digits than its factorization.

20113212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262328 (or 262326 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20113212020 its reverse (2021231102), we get a palindrome (22134443122).

The spelling of 20113212020 in words is "twenty billion, one hundred thirteen million, two hundred twelve thousand, twenty".