1312101211212 has 96 divisors (see below), whose sum is σ = 3711689049600. Its totient is φ = 397531886400.

The previous prime is 1312101211171. The next prime is 1312101211259. The reversal of 1312101211212 is 2121121012131.

It is a happy number.

1312101211212 is a `hidden beast` number, since 1 + 31 + 210 + 1 + 211 + 212 = 666.

It is a super-3 number, since 3×1312101211212³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6408262 + ... + 6609842.

It is an arithmetic number, because the mean of its divisors is an integer number (38663427600).

Almost surely, 2^{1312101211212} is an apocalyptic number.

1312101211212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312101211212 is an abundant number, since it is smaller than the sum of its proper divisors (2399587838388).

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

1312101211212 is a wasteful number, since it uses less digits than its factorization.

1312101211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207084 (or 207076 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 1312101211212 its reverse (2121121012131), we get a palindrome (3433222223343).

The spelling of 1312101211212 in words is "one trillion, three hundred twelve billion, one hundred one million, two hundred eleven thousand, two hundred twelve".