221120101999 has 2 divisors, whose sum is σ = 221120102000. Its totient is φ = 221120101998.

The previous prime is 221120101949. The next prime is 221120102129. The reversal of 221120101999 is 999101021122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221120101999 - 2²⁵ = 221086547567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221120101949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110560050999 + 110560051000.

It is an arithmetic number, because the mean of its divisors is an integer number (110560051000).

Almost surely, 2^221120101999 is an apocalyptic number.

221120101999 is a deficient number, since it is larger than the sum of its proper divisors (1).

221120101999 is an equidigital number, since it uses as much as digits as its factorization.

221120101999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 37.

The spelling of 221120101999 in words is "two hundred twenty-one billion, one hundred twenty million, one hundred one thousand, nine hundred ninety-nine".