2021202012222 has 72 divisors (see below), whose sum is σ = 4556981332800. Its totient is φ = 672325370496.

The previous prime is 2021202012107. The next prime is 2021202012227. The reversal of 2021202012222 is 2222102021202.

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 = 2021202012195 and 2021202012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021202012227) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6124654 + ... + 6446222.

It is an arithmetic number, because the mean of its divisors is an integer number (63291407400).

Almost surely, 2^{2021202012222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021202012222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2278490666400).

2021202012222 is an abundant number, since it is smaller than the sum of its proper divisors (2535779320578).

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

2021202012222 is an frugal number, since it uses more digits than its factorization.

2021202012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322074 (or 322053 counting only the distinct ones).

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

Adding to 2021202012222 its reverse (2222102021202), we get a palindrome (4243304033424).

The spelling of 2021202012222 in words is "two trillion, twenty-one billion, two hundred two million, twelve thousand, two hundred twenty-two".