221624846423 has 2 divisors, whose sum is σ = 221624846424. Its totient is φ = 221624846422.

The previous prime is 221624846393. The next prime is 221624846477. The reversal of 221624846423 is 324648426122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221624846423 - 2³⁴ = 204444977239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221624846123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110812423211 + 110812423212.

It is an arithmetic number, because the mean of its divisors is an integer number (110812423212).

Almost surely, 2^221624846423 is an apocalyptic number.

221624846423 is a deficient number, since it is larger than the sum of its proper divisors (1).

221624846423 is an equidigital number, since it uses as much as digits as its factorization.

221624846423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 884736, while the sum is 44.

The spelling of 221624846423 in words is "two hundred twenty-one billion, six hundred twenty-four million, eight hundred forty-six thousand, four hundred twenty-three".