2021000022 has 24 divisors (see below), whose sum is σ = 4413317376. Its totient is φ = 668361456.

The previous prime is 2021000017. The next prime is 2021000027. The reversal of 2021000022 is 2200001202.

It is an interprime number because it is at equal distance from previous prime (2021000017) and next prime (2021000027).

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 = 2020999968 and 2021000013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021000027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 439753 + ... + 444324.

It is an arithmetic number, because the mean of its divisors is an integer number (183888224).

Almost surely, 2^2021000022 is an apocalyptic number.

2021000022 is an abundant number, since it is smaller than the sum of its proper divisors (2392317354).

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

2021000022 is a wasteful number, since it uses less digits than its factorization.

2021000022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884212 (or 884209 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2021000022 is about 44955.5338306643. The cubic root of 2021000022 is about 1264.3154335307.

Adding to 2021000022 its reverse (2200001202), we get a palindrome (4221001224).

The spelling of 2021000022 in words is "two billion, twenty-one million, twenty-two", and thus it is an aban number and an uban number.