20021100000222 has 16 divisors (see below), whose sum is σ = 40698629509392. Its totient is φ = 6564295081920.

The previous prime is 20021100000179. The next prime is 20021100000271. The reversal of 20021100000222 is 22200000112002.

It is a junction number, because it is equal to n+sod(n) for n = 20021100000198 and 20021100000207.

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, 27351229143 + ... + 27351229874.

It is an arithmetic number, because the mean of its divisors is an integer number (2543664344337).

Almost surely, 2^{20021100000222} is an apocalyptic number.

20021100000222 is an abundant number, since it is smaller than the sum of its proper divisors (20677529509170).

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

20021100000222 is a wasteful number, since it uses less digits than its factorization.

20021100000222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54702459083.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20021100000222 its reverse (22200000112002), we get a palindrome (42221100112224).

The spelling of 20021100000222 in words is "twenty trillion, twenty-one billion, one hundred million, two hundred twenty-two", and thus it is an aban number.