2021122220022 has 24 divisors (see below), whose sum is σ = 4472270446176. Its totient is φ = 659373206256.

The previous prime is 2021122219979. The next prime is 2021122220063. The reversal of 2021122220022 is 2200222211202.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2021122219977 and 2021122220004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1194515833 + ... + 1194517524.

It is an arithmetic number, because the mean of its divisors is an integer number (186344601924).

Almost surely, 2^{2021122220022} is an apocalyptic number.

2021122220022 is an abundant number, since it is smaller than the sum of its proper divisors (2451148226154).

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

2021122220022 is a wasteful number, since it uses less digits than its factorization.

2021122220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2389033412 (or 2389033409 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2021122220022 its reverse (2200222211202), we get a palindrome (4221344431224).

The spelling of 2021122220022 in words is "two trillion, twenty-one billion, one hundred twenty-two million, two hundred twenty thousand, twenty-two".