1221013232 has 20 divisors (see below), whose sum is σ = 2366629776. Its totient is φ = 610270080.

The previous prime is 1221013229. The next prime is 1221013243. The reversal of 1221013232 is 2323101221.

It is a self number, because there is not a number n which added to its sum of digits gives 1221013232.

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, 32357 + ... + 59067.

Almost surely, 2^1221013232 is an apocalyptic number.

It is an amenable number.

1221013232 is a deficient number, since it is larger than the sum of its proper divisors (1145616544).

1221013232 is a wasteful number, since it uses less digits than its factorization.

1221013232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29576 (or 29570 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1221013232 is about 34942.9997567467. Note that the first 3 decimals coincide. The cubic root of 1221013232 is about 1068.8254593643.

Adding to 1221013232 its sum of digits (17), we get a square (1221013249 = 34943²).

Adding to 1221013232 its reverse (2323101221), we get a palindrome (3544114453).

The spelling of 1221013232 in words is "one billion, two hundred twenty-one million, thirteen thousand, two hundred thirty-two".