221022109999 has 2 divisors, whose sum is σ = 221022110000. Its totient is φ = 221022109998.

The previous prime is 221022109991. The next prime is 221022110069. The reversal of 221022109999 is 999901220122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221022109999 - 2³ = 221022109991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221022109991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110511054999 + 110511055000.

It is an arithmetic number, because the mean of its divisors is an integer number (110511055000).

Almost surely, 2^221022109999 is an apocalyptic number.

221022109999 is a deficient number, since it is larger than the sum of its proper divisors (1).

221022109999 is an equidigital number, since it uses as much as digits as its factorization.

221022109999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 46.

The spelling of 221022109999 in words is "two hundred twenty-one billion, twenty-two million, one hundred nine thousand, nine hundred ninety-nine".