222201222021021 has 4 divisors (see below), whose sum is σ = 296268296028032. Its totient is φ = 148134148014012.

The previous prime is 222201222021013. The next prime is 222201222021061. The reversal of 222201222021021 is 120120222102222.

222201222021021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 222201222021021 - 2³ = 222201222021013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222201222021001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37033537003501 + ... + 37033537003506.

It is an arithmetic number, because the mean of its divisors is an integer number (74067074007008).

Almost surely, 2^{222201222021021} is an apocalyptic number.

It is an amenable number.

222201222021021 is a deficient number, since it is larger than the sum of its proper divisors (74067074007011).

222201222021021 is an equidigital number, since it uses as much as digits as its factorization.

222201222021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74067074007010.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 222201222021021 its reverse (120120222102222), we get a palindrome (342321444123243).

The spelling of 222201222021021 in words is "two hundred twenty-two trillion, two hundred one billion, two hundred twenty-two million, twenty-one thousand, twenty-one".