222342351391 has 2 divisors, whose sum is σ = 222342351392. Its totient is φ = 222342351390.

The previous prime is 222342351389. The next prime is 222342351443. The reversal of 222342351391 is 193153243222.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222342351391 - 2¹ = 222342351389 is a prime.

It is a super-2 number, since 2×222342351391² (a number of 23 digits) contains 22 as substring.

Together with 222342351389, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 222342351391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222342351991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111171175695 + 111171175696.

It is an arithmetic number, because the mean of its divisors is an integer number (111171175696).

Almost surely, 2^222342351391 is an apocalyptic number.

222342351391 is a deficient number, since it is larger than the sum of its proper divisors (1).

222342351391 is an equidigital number, since it uses as much as digits as its factorization.

222342351391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 37.

The spelling of 222342351391 in words is "two hundred twenty-two billion, three hundred forty-two million, three hundred fifty-one thousand, three hundred ninety-one".