2171246961 has 16 divisors (see below), whose sum is σ = 3123123584. Its totient is φ = 1333822464.

The previous prime is 2171246951. The next prime is 2171246971. The reversal of 2171246961 is 1696421712.

It is an interprime number because it is at equal distance from previous prime (2171246951) and next prime (2171246971).

It is not a de Polignac number, because 2171246961 - 2⁵ = 2171246929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2171246911) 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, 25741 + ... + 70746.

It is an arithmetic number, because the mean of its divisors is an integer number (195195224).

Almost surely, 2^2171246961 is an apocalyptic number.

It is an amenable number.

2171246961 is a deficient number, since it is larger than the sum of its proper divisors (951876623).

2171246961 is a wasteful number, since it uses less digits than its factorization.

2171246961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97080.

The product of its digits is 36288, while the sum is 39.

The square root of 2171246961 is about 46596.6410913920. The cubic root of 2171246961 is about 1294.9005277321.

The spelling of 2171246961 in words is "two billion, one hundred seventy-one million, two hundred forty-six thousand, nine hundred sixty-one".