121312130012 has 12 divisors (see below), whose sum is σ = 223469713320. Its totient is φ = 57463640496.

The previous prime is 121312129997. The next prime is 121312130053. The reversal of 121312130012 is 210031213121.

It is a super-2 number, since 2×121312130012² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 798106043 + ... + 798106194.

It is an arithmetic number, because the mean of its divisors is an integer number (18622476110).

Almost surely, 2^121312130012 is an apocalyptic number.

It is an amenable number.

121312130012 is a deficient number, since it is larger than the sum of its proper divisors (102157583308).

121312130012 is a wasteful number, since it uses less digits than its factorization.

121312130012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1596212260 (or 1596212258 counting only the distinct ones).

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

Adding to 121312130012 its reverse (210031213121), we get a palindrome (331343343133).

The spelling of 121312130012 in words is "one hundred twenty-one billion, three hundred twelve million, one hundred thirty thousand, twelve".