2110200021 has 96 divisors (see below), whose sum is σ = 3645008640. Its totient is φ = 1166026752.

The previous prime is 2110199909. The next prime is 2110200061. The reversal of 2110200021 is 1200020112.

It is not a de Polignac number, because 2110200021 - 2¹⁷ = 2110068949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2110199976 and 2110200012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110200061) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2473431 + ... + 2474283.

It is an arithmetic number, because the mean of its divisors is an integer number (37968840).

Almost surely, 2^2110200021 is an apocalyptic number.

It is an amenable number.

2110200021 is a deficient number, since it is larger than the sum of its proper divisors (1534808619).

2110200021 is a wasteful number, since it uses less digits than its factorization.

2110200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955 (or 952 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2110200021 is about 45936.9134901334. The cubic root of 2110200021 is about 1282.6491401176.

Adding to 2110200021 its reverse (1200020112), we get a palindrome (3310220133).

The spelling of 2110200021 in words is "two billion, one hundred ten million, two hundred thousand, twenty-one".