20012122211020 has 24 divisors (see below), whose sum is σ = 42025890585168. Its totient is φ = 8004766228800.

The previous prime is 20012122211017. The next prime is 20012122211021. The reversal of 20012122211020 is 2011222121002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20012122210985 and 20012122211003.

It is not an unprimeable number, because it can be changed into a prime (20012122211021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3161671 + ... + 7072510.

It is an arithmetic number, because the mean of its divisors is an integer number (1751078774382).

Almost surely, 2^{20012122211020} is an apocalyptic number.

20012122211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20012122211020 is an abundant number, since it is smaller than the sum of its proper divisors (22013768374148).

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

20012122211020 is a wasteful number, since it uses less digits than its factorization.

20012122211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10331961 (or 10331959 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20012122211020 its reverse (2011222121002), we get a palindrome (22023344332022).

The spelling of 20012122211020 in words is "twenty trillion, twelve billion, one hundred twenty-two million, two hundred eleven thousand, twenty".