2120135521012 has 12 divisors (see below), whose sum is σ = 3710552231680. Its totient is φ = 1059977740536.

The previous prime is 2120135521001. The next prime is 2120135521069. The reversal of 2120135521012 is 2101255310212.

It is a happy number.

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, 22451988 + ... + 22546219.

Almost surely, 2^{2120135521012} is an apocalyptic number.

It is an amenable number.

2120135521012 is a deficient number, since it is larger than the sum of its proper divisors (1590416710668).

2120135521012 is a wasteful number, since it uses less digits than its factorization.

2120135521012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45009990 (or 45009988 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The spelling of 2120135521012 in words is "two trillion, one hundred twenty billion, one hundred thirty-five million, five hundred twenty-one thousand, twelve".