1213021232 has 20 divisors (see below), whose sum is σ = 2354465376. Its totient is φ = 605417280.

The previous prime is 1213021223. The next prime is 1213021241. The reversal of 1213021232 is 2321203121.

It is an interprime number because it is at equal distance from previous prime (1213021223) and next prime (1213021241).

It is a self number, because there is not a number n which added to its sum of digits gives 1213021232.

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, 59144 + ... + 76967.

Almost surely, 2^1213021232 is an apocalyptic number.

It is an amenable number.

1213021232 is a deficient number, since it is larger than the sum of its proper divisors (1141444144).

1213021232 is a wasteful number, since it uses less digits than its factorization.

1213021232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136676 (or 136670 counting only the distinct ones).

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

The square root of 1213021232 is about 34828.4543441135. The cubic root of 1213021232 is about 1066.4883953809.

Adding to 1213021232 its reverse (2321203121), we get a palindrome (3534224353).

The spelling of 1213021232 in words is "one billion, two hundred thirteen million, twenty-one thousand, two hundred thirty-two".