202222111020021 has 48 divisors (see below), whose sum is σ = 301352380430400. Its totient is φ = 130623071018496.

The previous prime is 202222111020011. The next prime is 202222111020089. The reversal of 202222111020021 is 120020111222202.

It is a happy number.

202222111020021 is a `hidden beast` number, since 2 + 0 + 222 + 211 + 10 + 200 + 21 = 666.

It is not a de Polignac number, because 202222111020021 - 2¹⁴ = 202222111003637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202222111019976 and 202222111020003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202222111020011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1326571 + ... + 20154503.

It is an arithmetic number, because the mean of its divisors is an integer number (6278174592300).

Almost surely, 2^{202222111020021} is an apocalyptic number.

It is an amenable number.

202222111020021 is a deficient number, since it is larger than the sum of its proper divisors (99130269410379).

202222111020021 is a wasteful number, since it uses less digits than its factorization.

202222111020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18828290 (or 18828287 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202222111020021 its reverse (120020111222202), we get a palindrome (322242222242223).

The spelling of 202222111020021 in words is "two hundred two trillion, two hundred twenty-two billion, one hundred eleven million, twenty thousand, twenty-one".