2161375122 has 32 divisors (see below), whose sum is σ = 4354560000. Its totient is φ = 715169168.

The previous prime is 2161375109. The next prime is 2161375123. The reversal of 2161375122 is 2215731612.

2161375122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2161375122.

It is not an unprimeable number, because it can be changed into a prime (2161375123) 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, 1441129 + ... + 1442627.

It is an arithmetic number, because the mean of its divisors is an integer number (136080000).

Almost surely, 2^2161375122 is an apocalyptic number.

2161375122 is an abundant number, since it is smaller than the sum of its proper divisors (2193184878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2161375122 is a wasteful number, since it uses less digits than its factorization.

2161375122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3110.

The product of its digits is 5040, while the sum is 30.

The square root of 2161375122 is about 46490.5917579030. The cubic root of 2161375122 is about 1292.9350716178.

The spelling of 2161375122 in words is "two billion, one hundred sixty-one million, three hundred seventy-five thousand, one hundred twenty-two".