221023109999 has 2 divisors, whose sum is σ = 221023110000. Its totient is φ = 221023109998.

The previous prime is 221023109933. The next prime is 221023110041. The reversal of 221023109999 is 999901320122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221023109999 - 2²⁰ = 221022061423 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221023109899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110511554999 + 110511555000.

It is an arithmetic number, because the mean of its divisors is an integer number (110511555000).

Almost surely, 2^221023109999 is an apocalyptic number.

221023109999 is a deficient number, since it is larger than the sum of its proper divisors (1).

221023109999 is an equidigital number, since it uses as much as digits as its factorization.

221023109999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 47.

The spelling of 221023109999 in words is "two hundred twenty-one billion, twenty-three million, one hundred nine thousand, nine hundred ninety-nine".