1221476432 has 20 divisors (see below), whose sum is σ = 2581757376. Its totient is φ = 555216480.

The previous prime is 1221476423. The next prime is 1221476441. The reversal of 1221476432 is 2346741221.

It is an interprime number because it is at equal distance from previous prime (1221476423) and next prime (1221476441).

It is a super-3 number, since 3×1221476432³ (a number of 28 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3469928 + ... + 3470279.

Almost surely, 2^1221476432 is an apocalyptic number.

It is an amenable number.

1221476432 is an abundant number, since it is smaller than the sum of its proper divisors (1360280944).

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

1221476432 is a wasteful number, since it uses less digits than its factorization.

1221476432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6940226 (or 6940220 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 1221476432 is about 34949.6270652492. The cubic root of 1221476432 is about 1068.9605977748.

The spelling of 1221476432 in words is "one billion, two hundred twenty-one million, four hundred seventy-six thousand, four hundred thirty-two".