20021011220202 has 32 divisors (see below), whose sum is σ = 40591044753792. Its totient is φ = 6582168946944.

The previous prime is 20021011220173. The next prime is 20021011220219. The reversal of 20021011220202 is 20202211012002.

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, 42658638 + ... + 43125414.

It is an arithmetic number, because the mean of its divisors is an integer number (1268470148556).

Almost surely, 2^{20021011220202} is an apocalyptic number.

20021011220202 is an abundant number, since it is smaller than the sum of its proper divisors (20570033533590).

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

20021011220202 is a wasteful number, since it uses less digits than its factorization.

20021011220202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564782.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20021011220202 its reverse (20202211012002), we get a palindrome (40223222232204).

The spelling of 20021011220202 in words is "twenty trillion, twenty-one billion, eleven million, two hundred twenty thousand, two hundred two".