1021110222100 has 36 divisors (see below), whose sum is σ = 2219161533148. Its totient is φ = 407826144000.

The previous prime is 1021110222091. The next prime is 1021110222133. The reversal of 1021110222100 is 12220111201.

It can be written as a sum of positive squares in 6 ways, for example, as 290975364 + 1020819246736 = 17058^2 + 1010356^2 .

It is a super-2 number, since 2×1021110222100² (a number of 25 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 11 ways as a sum of consecutive naturals, for example, 7657881 + ... + 7790080.

Almost surely, 2^{1021110222100} is an apocalyptic number.

1021110222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021110222100 is an abundant number, since it is smaller than the sum of its proper divisors (1198051311048).

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

1021110222100 is a wasteful number, since it uses less digits than its factorization.

1021110222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15448636 (or 15448629 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1021110222100 its reverse (12220111201), we get a palindrome (1033330333301).

The spelling of 1021110222100 in words is "one trillion, twenty-one billion, one hundred ten million, two hundred twenty-two thousand, one hundred".