1220231996 has 24 divisors (see below), whose sum is σ = 2197109040. Its totient is φ = 592617600.

The previous prime is 1220231989. The next prime is 1220232007. The reversal of 1220231996 is 6991320221.

It is a super-2 number, since 2×1220231996² = 2977932248124288032, which contains 22 as substring.

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, 21311 + ... + 53801.

It is an arithmetic number, because the mean of its divisors is an integer number (91546210).

Almost surely, 2^1220231996 is an apocalyptic number.

It is an amenable number.

1220231996 is a deficient number, since it is larger than the sum of its proper divisors (976877044).

1220231996 is a wasteful number, since it uses less digits than its factorization.

1220231996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32765 (or 32763 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 1220231996 is about 34931.8192483587. The cubic root of 1220231996 is about 1068.5974566275.

The spelling of 1220231996 in words is "one billion, two hundred twenty million, two hundred thirty-one thousand, nine hundred ninety-six".