1312002111212 has 24 divisors (see below), whose sum is σ = 2472827087472. Its totient is φ = 605488564800.

The previous prime is 1312002111187. The next prime is 1312002111257. The reversal of 1312002111212 is 2121112002131.

It is a happy number.

It is a super-2 number, since 2×1312002111212² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431339 + ... + 1676322.

It is an arithmetic number, because the mean of its divisors is an integer number (103034461978).

Almost surely, 2^{1312002111212} is an apocalyptic number.

It is an amenable number.

1312002111212 is a deficient number, since it is larger than the sum of its proper divisors (1160824976260).

1312002111212 is a wasteful number, since it uses less digits than its factorization.

1312002111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119649 (or 2119647 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1312002111212 its reverse (2121112002131), we get a palindrome (3433114113343).

The spelling of 1312002111212 in words is "one trillion, three hundred twelve billion, two million, one hundred eleven thousand, two hundred twelve".