222120201021 has 4 divisors (see below), whose sum is σ = 296160268032. Its totient is φ = 148080134012.

The previous prime is 222120201001. The next prime is 222120201073. The reversal of 222120201021 is 120102021222.

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 a cyclic number.

It is not a de Polignac number, because 222120201021 - 2⁹ = 222120200509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120201001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37020033501 + ... + 37020033506.

It is an arithmetic number, because the mean of its divisors is an integer number (74040067008).

Almost surely, 2^222120201021 is an apocalyptic number.

It is an amenable number.

222120201021 is a deficient number, since it is larger than the sum of its proper divisors (74040067011).

222120201021 is an equidigital number, since it uses as much as digits as its factorization.

222120201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74040067010.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222120201021 its reverse (120102021222), we get a palindrome (342222222243).

The spelling of 222120201021 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred one thousand, twenty-one".