1231213441512 has 32 divisors (see below), whose sum is σ = 3240035373600. Its totient is φ = 388804244544.

The previous prime is 1231213441489. The next prime is 1231213441553. The reversal of 1231213441512 is 2151443121321.

It is a super-2 number, since 2×1231213441512² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1231213441512.

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, 1350014283 + ... + 1350015194.

It is an arithmetic number, because the mean of its divisors is an integer number (101251105425).

Almost surely, 2^{1231213441512} is an apocalyptic number.

1231213441512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1231213441512 is an abundant number, since it is smaller than the sum of its proper divisors (2008821932088).

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

1231213441512 is a wasteful number, since it uses less digits than its factorization.

1231213441512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2700029505 (or 2700029501 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

Adding to 1231213441512 its reverse (2151443121321), we get a palindrome (3382656562833).

The spelling of 1231213441512 in words is "one trillion, two hundred thirty-one billion, two hundred thirteen million, four hundred forty-one thousand, five hundred twelve".