1022221120100 has 18 divisors (see below), whose sum is σ = 2218219830834. Its totient is φ = 408888448000.

The previous prime is 1022221120087. The next prime is 1022221120189. The reversal of 1022221120100 is 10211222201.

It can be written as a sum of positive squares in 3 ways, for example, as 225480256 + 1021995639844 = 15016^2 + 1010938^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5111105501 + ... + 5111105700.

Almost surely, 2^{1022221120100} is an apocalyptic number.

1022221120100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022221120100 is an abundant number, since it is smaller than the sum of its proper divisors (1195998710734).

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

1022221120100 is a wasteful number, since it uses less digits than its factorization.

1022221120100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10222211215 (or 10222211208 counting only the distinct ones).

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

Adding to 1022221120100 its reverse (10211222201), we get a palindrome (1032432342301).

It can be divided in two parts, 1022 and 221120100, that added together give a palindrome (221121122).

The spelling of 1022221120100 in words is "one trillion, twenty-two billion, two hundred twenty-one million, one hundred twenty thousand, one hundred".