2162013521 has 4 divisors (see below), whose sum is σ = 2162184000. Its totient is φ = 2161843044.

The previous prime is 2162013499. The next prime is 2162013533. The reversal of 2162013521 is 1253102612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2162013521 - 2¹⁰ = 2162012497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2162013541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64541 + ... + 92138.

It is an arithmetic number, because the mean of its divisors is an integer number (540546000).

Almost surely, 2^2162013521 is an apocalyptic number.

It is an amenable number.

2162013521 is a deficient number, since it is larger than the sum of its proper divisors (170479).

2162013521 is a wasteful number, since it uses less digits than its factorization.

2162013521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170478.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2162013521 is about 46497.4571455257. The cubic root of 2162013521 is about 1293.0623558940.

The spelling of 2162013521 in words is "two billion, one hundred sixty-two million, thirteen thousand, five hundred twenty-one".