2172652101 has 6 divisors (see below), whose sum is σ = 3138275270. Its totient is φ = 1448434728.

The previous prime is 2172652093. The next prime is 2172652117. The reversal of 2172652101 is 1012562712.

2172652101 is a `hidden beast` number, since 2 + 1 + 7 + 2 + 652 + 1 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1270851201 + 901800900 = 35649^2 + 30030^2 .

It is not a de Polignac number, because 2172652101 - 2³ = 2172652093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172652501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 120702886 + ... + 120702903.

Almost surely, 2^2172652101 is an apocalyptic number.

It is an amenable number.

2172652101 is a deficient number, since it is larger than the sum of its proper divisors (965623169).

2172652101 is a wasteful number, since it uses less digits than its factorization.

2172652101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241405795 (or 241405792 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 2172652101 is about 46611.7163490039. The cubic root of 2172652101 is about 1295.1798026060.

The spelling of 2172652101 in words is "two billion, one hundred seventy-two million, six hundred fifty-two thousand, one hundred one".