20220221211012 has 72 divisors (see below), whose sum is σ = 51761449958400. Its totient is φ = 6654469131648.

The previous prime is 20220221210971. The next prime is 20220221211049. The reversal of 20220221211012 is 21011212202202.

It is a happy number.

20220221211012 is a `hidden beast` number, since 2 + 0 + 220 + 221 + 211 + 0 + 12 = 666.

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

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, 71661664 + ... + 71943272.

It is an arithmetic number, because the mean of its divisors is an integer number (718909027200).

Almost surely, 2^{20220221211012} is an apocalyptic number.

It is an amenable number.

20220221211012 is an abundant number, since it is smaller than the sum of its proper divisors (31541228747388).

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

20220221211012 is a wasteful number, since it uses less digits than its factorization.

20220221211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306945 (or 306940 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20220221211012 its reverse (21011212202202), we get a palindrome (41231433413214).

The spelling of 20220221211012 in words is "twenty trillion, two hundred twenty billion, two hundred twenty-one million, two hundred eleven thousand, twelve".