2021221000022 has 16 divisors (see below), whose sum is σ = 3615600298752. Its totient is φ = 828575068200.

The previous prime is 2021220999991. The next prime is 2021221000037. The reversal of 2021221000022 is 2200001221202.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 2021220999970 and 2021221000006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3138541604 + ... + 3138542247.

It is an arithmetic number, because the mean of its divisors is an integer number (225975018672).

Almost surely, 2^{2021221000022} is an apocalyptic number.

2021221000022 is a deficient number, since it is larger than the sum of its proper divisors (1594379298730).

2021221000022 is a wasteful number, since it uses less digits than its factorization.

2021221000022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6277083883.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 2021221000022 its reverse (2200001221202), we get a palindrome (4221222221224).

The spelling of 2021221000022 in words is "two trillion, twenty-one billion, two hundred twenty-one million, twenty-two", and thus it is an aban number.