1220100112 has 60 divisors (see below), whose sum is σ = 2969615488. Its totient is φ = 475358400.

The previous prime is 1220100107. The next prime is 1220100131. The reversal of 1220100112 is 2110010221.

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, 31464 + ... + 58567.

Almost surely, 2^1220100112 is an apocalyptic number.

It is an amenable number.

1220100112 is an abundant number, since it is smaller than the sum of its proper divisors (1749515376).

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

1220100112 is a wasteful number, since it uses less digits than its factorization.

1220100112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90068 (or 90051 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1220100112 is about 34929.9314628586. The cubic root of 1220100112 is about 1068.5589568490.

Adding to 1220100112 its reverse (2110010221), we get a palindrome (3330110333).

The spelling of 1220100112 in words is "one billion, two hundred twenty million, one hundred thousand, one hundred twelve".