1220020000100 has 36 divisors (see below), whose sum is σ = 2888120075568. Its totient is φ = 443643636000.

The previous prime is 1220020000091. The next prime is 1220020000163. The reversal of 1220020000100 is 10000200221.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 554553446 + ... + 554555645.

Almost surely, 2^{1220020000100} is an apocalyptic number.

1220020000100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220020000100 is an abundant number, since it is smaller than the sum of its proper divisors (1668100075468).

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

1220020000100 is a wasteful number, since it uses less digits than its factorization.

1220020000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109109116 (or 1109109109 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 1220020000100 its reverse (10000200221), we get a palindrome (1230020200321).

The spelling of 1220020000100 in words is "one trillion, two hundred twenty billion, twenty million, one hundred", and thus it is an aban number.