2162011123 has 4 divisors (see below), whose sum is σ = 2162278008. Its totient is φ = 2161744240.

The previous prime is 2162011099. The next prime is 2162011127. The reversal of 2162011123 is 3211102612.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2162011123 is a prime.

It is a super-2 number, since 2×2162011123² = 9348584191951442258, which contains 22 as substring.

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 2162011123.

It is not an unprimeable number, because it can be changed into a prime (2162011127) 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, 120898 + ... + 137623.

It is an arithmetic number, because the mean of its divisors is an integer number (540569502).

Almost surely, 2^2162011123 is an apocalyptic number.

2162011123 is a deficient number, since it is larger than the sum of its proper divisors (266885).

2162011123 is an equidigital number, since it uses as much as digits as its factorization.

2162011123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266884.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 2162011123 is about 46497.4313591622. The cubic root of 2162011123 is about 1293.0618778266.

Adding to 2162011123 its reverse (3211102612), we get a palindrome (5373113735).

The spelling of 2162011123 in words is "two billion, one hundred sixty-two million, eleven thousand, one hundred twenty-three".