1221433004 has 24 divisors (see below), whose sum is σ = 2336015808. Its totient is φ = 554199440.

The previous prime is 1221432997. The next prime is 1221433027. The reversal of 1221433004 is 4003341221.

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, 119 + ... + 49425.

It is an arithmetic number, because the mean of its divisors is an integer number (97333992).

Almost surely, 2^1221433004 is an apocalyptic number.

It is an amenable number.

1221433004 is a deficient number, since it is larger than the sum of its proper divisors (1114582804).

1221433004 is a wasteful number, since it uses less digits than its factorization.

1221433004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49885 (or 49883 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1221433004 is about 34949.0057655436. The cubic root of 1221433004 is about 1068.9479291251.

Adding to 1221433004 its reverse (4003341221), we get a palindrome (5224774225).

The spelling of 1221433004 in words is "one billion, two hundred twenty-one million, four hundred thirty-three thousand, four".