1220002112 has 56 divisors (see below), whose sum is σ = 2770510080. Its totient is φ = 522155520.

The previous prime is 1220002097. The next prime is 1220002139. The reversal of 1220002112 is 2112000221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 1220002093 and 1220002102.

It is a congruent number.

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, 464162 + ... + 466782.

Almost surely, 2^1220002112 is an apocalyptic number.

It is an amenable number.

1220002112 is an abundant number, since it is smaller than the sum of its proper divisors (1550507968).

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

1220002112 is a wasteful number, since it uses less digits than its factorization.

1220002112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679 (or 3669 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1220002112 is about 34928.5286263249. The cubic root of 1220002112 is about 1068.5303467427.

Adding to 1220002112 its reverse (2112000221), we get a palindrome (3332002333).

The spelling of 1220002112 in words is "one billion, two hundred twenty million, two thousand, one hundred twelve".