1221000332 has 12 divisors (see below), whose sum is σ = 2145692640. Its totient is φ = 607945296.

The previous prime is 1221000329. The next prime is 1221000343. The reversal of 1221000332 is 2330001221.

It is a happy number.

It is a super-2 number, since 2×1221000332² = 2981683621488220448, which contains 22 as substring.

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, 637643 + ... + 639554.

It is an arithmetic number, because the mean of its divisors is an integer number (178807720).

Almost surely, 2^1221000332 is an apocalyptic number.

It is an amenable number.

1221000332 is a deficient number, since it is larger than the sum of its proper divisors (924692308).

1221000332 is a wasteful number, since it uses less digits than its factorization.

1221000332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277440 (or 1277438 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1221000332 is about 34942.8151699316. The cubic root of 1221000332 is about 1068.8216953055.

Adding to 1221000332 its reverse (2330001221), we get a palindrome (3551001553).

The spelling of 1221000332 in words is "one billion, two hundred twenty-one million, three hundred thirty-two", and thus it is an aban number.