1220989132 has 36 divisors (see below), whose sum is σ = 2436779016. Its totient is φ = 530854720.

The previous prime is 1220989127. The next prime is 1220989199. The reversal of 1220989132 is 2319890221.

It is a super-2 number, since 2×1220989132² = 2981628920924226848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220989091 and 1220989100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2953 + ... + 49504.

It is an arithmetic number, because the mean of its divisors is an integer number (67688306).

Almost surely, 2^1220989132 is an apocalyptic number.

It is an amenable number.

1220989132 is a deficient number, since it is larger than the sum of its proper divisors (1215789884).

1220989132 is a wasteful number, since it uses less digits than its factorization.

1220989132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52518 (or 52493 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1220989132 is about 34942.6549077199. The cubic root of 1220989132 is about 1068.8184272639.

The spelling of 1220989132 in words is "one billion, two hundred twenty million, nine hundred eighty-nine thousand, one hundred thirty-two".