2151111017 has 12 divisors (see below), whose sum is σ = 2372837040. Its totient is φ = 1948614360.

The previous prime is 2151111007. The next prime is 2151111023. The reversal of 2151111017 is 7101111512.

It is not a de Polignac number, because 2151111017 - 2²⁴ = 2134333801 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2151111017.

It is not an unprimeable number, because it can be changed into a prime (2151111007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2834 + ... + 65652.

It is an arithmetic number, because the mean of its divisors is an integer number (197736420).

Almost surely, 2^2151111017 is an apocalyptic number.

It is an amenable number.

2151111017 is a deficient number, since it is larger than the sum of its proper divisors (221726023).

2151111017 is a wasteful number, since it uses less digits than its factorization.

2151111017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63124 (or 63113 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 20.

The square root of 2151111017 is about 46380.0713345721. The cubic root of 2151111017 is about 1290.8851599723.

Adding to 2151111017 its reverse (7101111512), we get a palindrome (9252222529).

The spelling of 2151111017 in words is "two billion, one hundred fifty-one million, one hundred eleven thousand, seventeen".