2222321231021 has 2 divisors, whose sum is σ = 2222321231022. Its totient is φ = 2222321231020.

The previous prime is 2222321231003. The next prime is 2222321231047. The reversal of 2222321231021 is 1201321232222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1321741108900 + 900580122121 = 1149670^2 + 948989^2 .

It is a cyclic number.

It is not a de Polignac number, because 2222321231021 - 2¹⁴ = 2222321214637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2222321431021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111160615510 + 1111160615511.

It is an arithmetic number, because the mean of its divisors is an integer number (1111160615511).

Almost surely, 2^{2222321231021} is an apocalyptic number.

It is an amenable number.

2222321231021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2222321231021 is an equidigital number, since it uses as much as digits as its factorization.

2222321231021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2222321231021 its reverse (1201321232222), we get a palindrome (3423642463243).

The spelling of 2222321231021 in words is "two trillion, two hundred twenty-two billion, three hundred twenty-one million, two hundred thirty-one thousand, twenty-one".