223422261991 has 2 divisors, whose sum is σ = 223422261992. Its totient is φ = 223422261990.

The previous prime is 223422261913. The next prime is 223422262001. The reversal of 223422261991 is 199162224322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 223422261991 - 2²¹ = 223420164839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223422261791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111711130995 + 111711130996.

It is an arithmetic number, because the mean of its divisors is an integer number (111711130996).

Almost surely, 2^223422261991 is an apocalyptic number.

223422261991 is a deficient number, since it is larger than the sum of its proper divisors (1).

223422261991 is an equidigital number, since it uses as much as digits as its factorization.

223422261991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 43.

The spelling of 223422261991 in words is "two hundred twenty-three billion, four hundred twenty-two million, two hundred sixty-one thousand, nine hundred ninety-one".