1512012121012 has 6 divisors (see below), whose sum is σ = 2646021211778. Its totient is φ = 756006060504.

The previous prime is 1512012120991. The next prime is 1512012121021. The reversal of 1512012121012 is 2101212102151.

It can be written as a sum of positive squares in only one way, i.e., 1364583767716 + 147428353296 = 1168154^2 + 383964^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189001515123 + ... + 189001515130.

Almost surely, 2^{1512012121012} is an apocalyptic number.

It is an amenable number.

1512012121012 is a deficient number, since it is larger than the sum of its proper divisors (1134009090766).

1512012121012 is a wasteful number, since it uses less digits than its factorization.

1512012121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378003030257 (or 378003030255 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 1512012121012 its reverse (2101212102151), we get a palindrome (3613224223163).

The spelling of 1512012121012 in words is "one trillion, five hundred twelve billion, twelve million, one hundred twenty-one thousand, twelve".