2221321012231 has 2 divisors, whose sum is σ = 2221321012232. Its totient is φ = 2221321012230.

The previous prime is 2221321012217. The next prime is 2221321012291. The reversal of 2221321012231 is 1322101231222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221321012231 - 2⁷ = 2221321012103 is a prime.

It is a super-2 number, since 2×2221321012231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221321012291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110660506115 + 1110660506116.

It is an arithmetic number, because the mean of its divisors is an integer number (1110660506116).

Almost surely, 2^{2221321012231} is an apocalyptic number.

2221321012231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221321012231 is an equidigital number, since it uses as much as digits as its factorization.

2221321012231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2221321012231 its reverse (1322101231222), we get a palindrome (3543422243453).

The spelling of 2221321012231 in words is "two trillion, two hundred twenty-one billion, three hundred twenty-one million, twelve thousand, two hundred thirty-one".