2179913121 has 8 divisors (see below), whose sum is σ = 3229500960. Its totient is φ = 1453275396.

The previous prime is 2179913119. The next prime is 2179913167. The reversal of 2179913121 is 1213199712.

2179913121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2179913121 - 2¹ = 2179913119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2179913921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40368735 + ... + 40368788.

It is an arithmetic number, because the mean of its divisors is an integer number (403687620).

Almost surely, 2^2179913121 is an apocalyptic number.

It is an amenable number.

2179913121 is a deficient number, since it is larger than the sum of its proper divisors (1049587839).

2179913121 is an equidigital number, since it uses as much as digits as its factorization.

2179913121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80737532 (or 80737526 counting only the distinct ones).

The product of its digits is 6804, while the sum is 36.

The square root of 2179913121 is about 46689.5397385753. The cubic root of 2179913121 is about 1296.6210318776.

The spelling of 2179913121 in words is "two billion, one hundred seventy-nine million, nine hundred thirteen thousand, one hundred twenty-one".