1313211212 has 12 divisors (see below), whose sum is σ = 2372252736. Its totient is φ = 635424720.

The previous prime is 1313211209. The next prime is 1313211217. The reversal of 1313211212 is 2121123131.

It is not an unprimeable number, because it can be changed into a prime (1313211217) 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, 5295083 + ... + 5295330.

It is an arithmetic number, because the mean of its divisors is an integer number (197687728).

Almost surely, 2^1313211212 is an apocalyptic number.

It is an amenable number.

1313211212 is a deficient number, since it is larger than the sum of its proper divisors (1059041524).

1313211212 is a wasteful number, since it uses less digits than its factorization.

1313211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10590448 (or 10590446 counting only the distinct ones).

The product of its digits is 72, while the sum is 17.

The square root of 1313211212 is about 36238.2561942486. The cubic root of 1313211212 is about 1095.0775122183.

Adding to 1313211212 its reverse (2121123131), we get a palindrome (3434334343).

The spelling of 1313211212 in words is "one billion, three hundred thirteen million, two hundred eleven thousand, two hundred twelve".