22013212020 has 24 divisors (see below), whose sum is σ = 61636993824. Its totient is φ = 5870189856.

The previous prime is 22013211989. The next prime is 22013212043. The reversal of 22013212020 is 2021231022.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 183443374 + ... + 183443493.

It is an arithmetic number, because the mean of its divisors is an integer number (2568208076).

Almost surely, 2^22013212020 is an apocalyptic number.

22013212020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22013212020 is an abundant number, since it is smaller than the sum of its proper divisors (39623781804).

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

22013212020 is a wasteful number, since it uses less digits than its factorization.

22013212020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366886879 (or 366886877 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 22013212020 its reverse (2021231022), we get a palindrome (24034443042).

The spelling of 22013212020 in words is "twenty-two billion, thirteen million, two hundred twelve thousand, twenty".