2101026872 has 64 divisors (see below), whose sum is σ = 4794966720. Its totient is φ = 842508288.

The previous prime is 2101026869. The next prime is 2101026877. The reversal of 2101026872 is 2786201012.

It is a super-2 number, since 2×2101026872² = 8828627833732208768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101026877) 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, 158318 + ... + 171074.

It is an arithmetic number, because the mean of its divisors is an integer number (74921355).

Almost surely, 2^2101026872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101026872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2397483360).

2101026872 is an abundant number, since it is smaller than the sum of its proper divisors (2693939848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2101026872 is a wasteful number, since it uses less digits than its factorization.

2101026872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12960 (or 12956 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 2101026872 is about 45836.9596722994. The cubic root of 2101026872 is about 1280.7878596873.

Adding to 2101026872 its reverse (2786201012), we get a palindrome (4887227884).

The spelling of 2101026872 in words is "two billion, one hundred one million, twenty-six thousand, eight hundred seventy-two".