1212151232 has 14 divisors (see below), whose sum is σ = 2405362728. Its totient is φ = 606075584.

The previous prime is 1212151231. The next prime is 1212151247. The reversal of 1212151232 is 2321512121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212151231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9469868 + ... + 9469995.

Almost surely, 2^1212151232 is an apocalyptic number.

It is an amenable number.

1212151232 is a deficient number, since it is larger than the sum of its proper divisors (1193211496).

1212151232 is an equidigital number, since it uses as much as digits as its factorization.

1212151232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18939875 (or 18939865 counting only the distinct ones).

The product of its digits is 240, while the sum is 20.

The square root of 1212151232 is about 34815.9623161561. The cubic root of 1212151232 is about 1066.2333663701.

Adding to 1212151232 its reverse (2321512121), we get a palindrome (3533663353).

The spelling of 1212151232 in words is "one billion, two hundred twelve million, one hundred fifty-one thousand, two hundred thirty-two".