222231301021 has 4 divisors (see below), whose sum is σ = 223153422844. Its totient is φ = 221309179200.

The previous prime is 222231301003. The next prime is 222231301031. The reversal of 222231301021 is 120103132222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 204294056121 + 17937244900 = 451989^2 + 133930^2 .

It is a cyclic number.

It is not a de Polignac number, because 222231301021 - 2³³ = 213641366429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222231301021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222231301031) 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, 461060550 + ... + 461061031.

It is an arithmetic number, because the mean of its divisors is an integer number (55788355711).

Almost surely, 2^222231301021 is an apocalyptic number.

It is an amenable number.

222231301021 is a deficient number, since it is larger than the sum of its proper divisors (922121823).

222231301021 is an equidigital number, since it uses as much as digits as its factorization.

222231301021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922121822.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 222231301021 its reverse (120103132222), we get a palindrome (342334433243).

The spelling of 222231301021 in words is "two hundred twenty-two billion, two hundred thirty-one million, three hundred one thousand, twenty-one".