2120972135 has 16 divisors (see below), whose sum is σ = 2589045600. Its totient is φ = 1667571840.

The previous prime is 2120972131. The next prime is 2120972219. The reversal of 2120972135 is 5312790212.

It is not a de Polignac number, because 2120972135 - 2² = 2120972131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120972131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 516149 + ... + 520241.

It is an arithmetic number, because the mean of its divisors is an integer number (161815350).

Almost surely, 2^2120972135 is an apocalyptic number.

2120972135 is a deficient number, since it is larger than the sum of its proper divisors (468073465).

2120972135 is a wasteful number, since it uses less digits than its factorization.

2120972135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5858.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 2120972135 is about 46054.0132344620. The cubic root of 2120972135 is about 1284.8279854733.

The spelling of 2120972135 in words is "two billion, one hundred twenty million, nine hundred seventy-two thousand, one hundred thirty-five".