20120222002100 has 72 divisors (see below), whose sum is σ = 48437341999200. Its totient is φ = 7192436809600.

The previous prime is 20120222002073. The next prime is 20120222002187. The reversal of 20120222002100 is 120022202102.

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, 154944515 + ... + 155074314.

It is an arithmetic number, because the mean of its divisors is an integer number (672740861100).

Almost surely, 2^{20120222002100} is an apocalyptic number.

20120222002100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120222002100 is an abundant number, since it is smaller than the sum of its proper divisors (28317119997100).

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

20120222002100 is a wasteful number, since it uses less digits than its factorization.

20120222002100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310018913 (or 310018906 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20120222002100 its reverse (120022202102), we get a palindrome (20240244204202).

The spelling of 20120222002100 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-two million, two thousand, one hundred".