1201220112 has 40 divisors (see below), whose sum is σ = 3131634880. Its totient is φ = 396731520.

The previous prime is 1201220087. The next prime is 1201220129. The reversal of 1201220112 is 2110221021.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109564 + ... + 120027.

It is an arithmetic number, because the mean of its divisors is an integer number (78290872).

Almost surely, 2^1201220112 is an apocalyptic number.

1201220112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1201220112 is an abundant number, since it is smaller than the sum of its proper divisors (1930414768).

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

1201220112 is a wasteful number, since it uses less digits than its factorization.

1201220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229711 (or 229705 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1201220112 is about 34658.6224769537. The cubic root of 1201220112 is about 1063.0186034296.

Adding to 1201220112 its reverse (2110221021), we get a palindrome (3311441133).

Subtracting 1201220112 from its reverse (2110221021), we obtain a palindrome (909000909).

The spelling of 1201220112 in words is "one billion, two hundred one million, two hundred twenty thousand, one hundred twelve".