20021222101100 has 72 divisors (see below), whose sum is σ = 47405041643568. Its totient is φ = 7279008364800.

The previous prime is 20021222100961. The next prime is 20021222101171. The reversal of 20021222101100 is 110122212002.

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, 3792194 + ... + 7377206.

Almost surely, 2^{20021222101100} is an apocalyptic number.

20021222101100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021222101100 is an abundant number, since it is smaller than the sum of its proper divisors (27383819542468).

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

20021222101100 is a wasteful number, since it uses less digits than its factorization.

20021222101100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3590115 (or 3590108 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20021222101100 its reverse (110122212002), we get a palindrome (20131344313102).

The spelling of 20021222101100 in words is "twenty trillion, twenty-one billion, two hundred twenty-two million, one hundred one thousand, one hundred".