1212413312 has 32 divisors (see below), whose sum is σ = 2634935400. Its totient is φ = 551096320.

The previous prime is 1212413311. The next prime is 1212413341. The reversal of 1212413312 is 2133142121.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1212413312² = 2939892078229618688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212413311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429137 + ... + 431952.

Almost surely, 2^1212413312 is an apocalyptic number.

It is an amenable number.

1212413312 is an abundant number, since it is smaller than the sum of its proper divisors (1422522088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212413312 is an equidigital number, since it uses as much as digits as its factorization.

1212413312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861114 (or 861102 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 1212413312 is about 34819.7259035737. The cubic root of 1212413312 is about 1066.3102045007.

Adding to 1212413312 its reverse (2133142121), we get a palindrome (3345555433).

The spelling of 1212413312 in words is "one billion, two hundred twelve million, four hundred thirteen thousand, three hundred twelve".