2171123007 has 16 divisors (see below), whose sum is σ = 2943338112. Its totient is φ = 1423239840.

The previous prime is 2171122991. The next prime is 2171123021. The reversal of 2171123007 is 7003211712.

2171123007 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2171123007 - 2⁴ = 2171122991 is a prime.

It is a super-2 number, since 2×2171123007² = 9427550223049444098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171173007) 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, 105313 + ... + 124229.

It is an arithmetic number, because the mean of its divisors is an integer number (183958632).

Almost surely, 2^2171123007 is an apocalyptic number.

2171123007 is a deficient number, since it is larger than the sum of its proper divisors (772215105).

2171123007 is a wasteful number, since it uses less digits than its factorization.

2171123007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19558.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 2171123007 is about 46595.3109979964. The cubic root of 2171123007 is about 1294.8758858010.

Adding to 2171123007 its reverse (7003211712), we get a palindrome (9174334719).

The spelling of 2171123007 in words is "two billion, one hundred seventy-one million, one hundred twenty-three thousand, seven".