2171157103 has 4 divisors (see below), whose sum is σ = 2172730648. Its totient is φ = 2169583560.

The previous prime is 2171157101. The next prime is 2171157127. The reversal of 2171157103 is 3017511712.

2171157103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2171157103 - 2¹ = 2171157101 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 (2171157101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 784701 + ... + 787462.

It is an arithmetic number, because the mean of its divisors is an integer number (543182662).

Almost surely, 2^2171157103 is an apocalyptic number.

2171157103 is a deficient number, since it is larger than the sum of its proper divisors (1573545).

2171157103 is a wasteful number, since it uses less digits than its factorization.

2171157103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573544.

The product of its (nonzero) digits is 1470, while the sum is 28.

The square root of 2171157103 is about 46595.6768702849. The cubic root of 2171157103 is about 1294.8826641452.

Adding to 2171157103 its reverse (3017511712), we get a palindrome (5188668815).

The spelling of 2171157103 in words is "two billion, one hundred seventy-one million, one hundred fifty-seven thousand, one hundred three".