20212220202012 has 72 divisors (see below), whose sum is σ = 52473741155472. Its totient is φ = 6555205324800.

The previous prime is 20212220201923. The next prime is 20212220202059. The reversal of 20212220202012 is 21020202221202.

20212220202012 is a `hidden beast` number, since 20 + 212 + 220 + 202 + 0 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129886812 + ... + 130042332.

Almost surely, 2^{20212220202012} is an apocalyptic number.

It is an amenable number.

20212220202012 is an abundant number, since it is smaller than the sum of its proper divisors (32261520953460).

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

20212220202012 is a wasteful number, since it uses less digits than its factorization.

20212220202012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253139 (or 253134 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20212220202012 its reverse (21020202221202), we get a palindrome (41232422423214).

The spelling of 20212220202012 in words is "twenty trillion, two hundred twelve billion, two hundred twenty million, two hundred two thousand, twelve".