223642122377501 has 2 divisors, whose sum is σ = 223642122377502. Its totient is φ = 223642122377500.

The previous prime is 223642122377461. The next prime is 223642122377651. The reversal of 223642122377501 is 105773221246322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215628637121401 + 8013485256100 = 14684299^2 + 2830810^2 .

It is a cyclic number.

It is not a de Polignac number, because 223642122377501 - 2⁴² = 219244075866397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223642122377801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111821061188750 + 111821061188751.

It is an arithmetic number, because the mean of its divisors is an integer number (111821061188751).

Almost surely, 2^{223642122377501} is an apocalyptic number.

It is an amenable number.

223642122377501 is a deficient number, since it is larger than the sum of its proper divisors (1).

223642122377501 is an equidigital number, since it uses as much as digits as its factorization.

223642122377501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1693440, while the sum is 47.

The spelling of 223642122377501 in words is "two hundred twenty-three trillion, six hundred forty-two billion, one hundred twenty-two million, three hundred seventy-seven thousand, five hundred one".