1220113112 has 8 divisors (see below), whose sum is σ = 2287712100. Its totient is φ = 610056552.

The previous prime is 1220113109. The next prime is 1220113117. The reversal of 1220113112 is 2113110221.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220113117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76257062 + ... + 76257077.

Almost surely, 2^1220113112 is an apocalyptic number.

It is an amenable number.

1220113112 is a deficient number, since it is larger than the sum of its proper divisors (1067598988).

1220113112 is a wasteful number, since it uses less digits than its factorization.

1220113112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152514145 (or 152514141 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1220113112 is about 34930.1175491867. The cubic root of 1220113112 is about 1068.5627519521.

Adding to 1220113112 its reverse (2113110221), we get a palindrome (3333223333).

The spelling of 1220113112 in words is "one billion, two hundred twenty million, one hundred thirteen thousand, one hundred twelve".