1220002312 has 32 divisors (see below), whose sum is σ = 2459145600. Its totient is φ = 565596864.

The previous prime is 1220002291. The next prime is 1220002327. The reversal of 1220002312 is 2132000221.

It is a junction number, because it is equal to n+sod(n) for n = 1220002292 and 1220002301.

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, 78243 + ... + 92530.

It is an arithmetic number, because the mean of its divisors is an integer number (76848300).

Almost surely, 2^1220002312 is an apocalyptic number.

It is an amenable number.

1220002312 is an abundant number, since it is smaller than the sum of its proper divisors (1239143288).

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

1220002312 is a wasteful number, since it uses less digits than its factorization.

1220002312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170845 (or 170841 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1220002312 is about 34928.5314893140. The cubic root of 1220002312 is about 1068.5304051323.

Adding to 1220002312 its reverse (2132000221), we get a palindrome (3352002533).

The spelling of 1220002312 in words is "one billion, two hundred twenty million, two thousand, three hundred twelve".