2101255023 has 16 divisors (see below), whose sum is σ = 3237891840. Its totient is φ = 1187224896.

The previous prime is 2101255019. The next prime is 2101255103. The reversal of 2101255023 is 3205521012.

It is not a de Polignac number, because 2101255023 - 2² = 2101255019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101256023) 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, 560265 + ... + 564002.

It is an arithmetic number, because the mean of its divisors is an integer number (202368240).

Almost surely, 2^2101255023 is an apocalyptic number.

2101255023 is a deficient number, since it is larger than the sum of its proper divisors (1136636817).

2101255023 is a wasteful number, since it uses less digits than its factorization.

2101255023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124366.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2101255023 is about 45839.4483278322. The cubic root of 2101255023 is about 1280.8342183605.

Adding to 2101255023 its reverse (3205521012), we get a palindrome (5306776035).

The spelling of 2101255023 in words is "two billion, one hundred one million, two hundred fifty-five thousand, twenty-three".