2221222220131 has 2 divisors, whose sum is σ = 2221222220132. Its totient is φ = 2221222220130.

The previous prime is 2221222220051. The next prime is 2221222220207. The reversal of 2221222220131 is 1310222221222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2221222220131 - 2²⁵ = 2221188665699 is a prime.

It is a super-2 number, since 2×2221222220131² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2221622220131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110611110065 + 1110611110066.

It is an arithmetic number, because the mean of its divisors is an integer number (1110611110066).

Almost surely, 2^{2221222220131} is an apocalyptic number.

2221222220131 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221222220131 is an equidigital number, since it uses as much as digits as its factorization.

2221222220131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 2221222220131 its reverse (1310222221222), we get a palindrome (3531444441353).

The spelling of 2221222220131 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred twenty thousand, one hundred thirty-one".