42222691361 has 2 divisors, whose sum is σ = 42222691362. Its totient is φ = 42222691360.

The previous prime is 42222691339. The next prime is 42222691363. The reversal of 42222691361 is 16319622224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42222441361 + 250000 = 205481^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 42222691361 - 2⁶ = 42222691297 is a prime.

Together with 42222691363, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42222691363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21111345680 + 21111345681.

It is an arithmetic number, because the mean of its divisors is an integer number (21111345681).

Almost surely, 2^42222691361 is an apocalyptic number.

It is an amenable number.

42222691361 is a deficient number, since it is larger than the sum of its proper divisors (1).

42222691361 is an equidigital number, since it uses as much as digits as its factorization.

42222691361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 38.

The spelling of 42222691361 in words is "forty-two billion, two hundred twenty-two million, six hundred ninety-one thousand, three hundred sixty-one".