20110221222222 has 16 divisors (see below), whose sum is σ = 41201428846032. Its totient is φ = 6539909340480.

The previous prime is 20110221222173. The next prime is 20110221222331. The reversal of 20110221222222 is 22222212201102.

It is a super-2 number, since 2×20110221222222² (a number of 27 digits) contains 22 as substring.

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, 40874433133 + ... + 40874433624.

It is an arithmetic number, because the mean of its divisors is an integer number (2575089302877).

Almost surely, 2^{20110221222222} is an apocalyptic number.

20110221222222 is an abundant number, since it is smaller than the sum of its proper divisors (21091207623810).

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

20110221222222 is a wasteful number, since it uses less digits than its factorization.

20110221222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81748866803.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 20110221222222 its reverse (22222212201102), we get a palindrome (42332433423324).

The spelling of 20110221222222 in words is "twenty trillion, one hundred ten billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-two".