2110011000021 has 24 divisors (see below), whose sum is σ = 3083626802880. Its totient is φ = 1390207383936.

The previous prime is 2110011000017. The next prime is 2110011000143. The reversal of 2110011000021 is 1200001100112.

It is a happy number.

It is not a de Polignac number, because 2110011000021 - 2² = 2110011000017 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 2110010999967 and 2110011000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110011000521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2636641 + ... + 3342438.

It is an arithmetic number, because the mean of its divisors is an integer number (128484450120).

Almost surely, 2^{2110011000021} is an apocalyptic number.

It is an amenable number.

2110011000021 is a deficient number, since it is larger than the sum of its proper divisors (973615802859).

2110011000021 is a wasteful number, since it uses less digits than its factorization.

2110011000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5979545 (or 5979542 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 2110011000021 its reverse (1200001100112), we get a palindrome (3310012100133).

The spelling of 2110011000021 in words is "two trillion, one hundred ten billion, eleven million, twenty-one", and thus it is an aban number.