1212311012 has 48 divisors (see below), whose sum is σ = 2413393920. Its totient is φ = 527788800.

The previous prime is 1212311003. The next prime is 1212311027. The reversal of 1212311012 is 2101132121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158312 + ... + 165792.

It is an arithmetic number, because the mean of its divisors is an integer number (50279040).

Almost surely, 2^1212311012 is an apocalyptic number.

It is an amenable number.

1212311012 is a deficient number, since it is larger than the sum of its proper divisors (1201082908).

1212311012 is a wasteful number, since it uses less digits than its factorization.

1212311012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7652 (or 7650 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1212311012 is about 34818.2568776784. The cubic root of 1212311012 is about 1066.2802129125.

Adding to 1212311012 its reverse (2101132121), we get a palindrome (3313443133).

The spelling of 1212311012 in words is "one billion, two hundred twelve million, three hundred eleven thousand, twelve".