1210131351512 has 8 divisors (see below), whose sum is σ = 2268996284100. Its totient is φ = 605065675752.

The previous prime is 1210131351511. The next prime is 1210131351529. The reversal of 1210131351512 is 2151531310121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1210131351512² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210131351511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75633209462 + ... + 75633209477.

Almost surely, 2^{1210131351512} is an apocalyptic number.

It is an amenable number.

1210131351512 is a deficient number, since it is larger than the sum of its proper divisors (1058864932588).

1210131351512 is a wasteful number, since it uses less digits than its factorization.

1210131351512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151266418945 (or 151266418941 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 26.

Adding to 1210131351512 its reverse (2151531310121), we get a palindrome (3361662661633).

The spelling of 1210131351512 in words is "one trillion, two hundred ten billion, one hundred thirty-one million, three hundred fifty-one thousand, five hundred twelve".