1220133112 has 64 divisors (see below), whose sum is σ = 2648700000. Its totient is φ = 520765440.

The previous prime is 1220133071. The next prime is 1220133133. The reversal of 1220133112 is 2113310221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 976264 + ... + 977512.

Almost surely, 2^1220133112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220133112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1324350000).

1220133112 is an abundant number, since it is smaller than the sum of its proper divisors (1428566888).

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

1220133112 is a wasteful number, since it uses less digits than its factorization.

1220133112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936 (or 1932 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1220133112 is about 34930.4038339095. The cubic root of 1220133112 is about 1068.5685905196.

Adding to 1220133112 its reverse (2113310221), we get a palindrome (3333443333).

The spelling of 1220133112 in words is "one billion, two hundred twenty million, one hundred thirty-three thousand, one hundred twelve".