1220310222100 has 18 divisors (see below), whose sum is σ = 2648073182174. Its totient is φ = 488124088800.

The previous prime is 1220310222083. The next prime is 1220310222137. The reversal of 1220310222100 is 12220130221.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 267980158224 + 952330063876 = 517668^2 + 975874^2 .

It is a congruent number.

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, 6101551011 + ... + 6101551210.

Almost surely, 2^{1220310222100} is an apocalyptic number.

1220310222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220310222100 is an abundant number, since it is smaller than the sum of its proper divisors (1427762960074).

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

1220310222100 is a wasteful number, since it uses less digits than its factorization.

1220310222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12203102235 (or 12203102228 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1220310222100 its reverse (12220130221), we get a palindrome (1232530352321).

The spelling of 1220310222100 in words is "one trillion, two hundred twenty billion, three hundred ten million, two hundred twenty-two thousand, one hundred".