221102099 has 2 divisors, whose sum is σ = 221102100. Its totient is φ = 221102098.

The previous prime is 221102093. The next prime is 221102113. The reversal of 221102099 is 990201122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221102099 - 2⁴ = 221102083 is a prime.

It is a super-2 number, since 2×221102099² = 97772276364411602, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221102093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110551049 + 110551050.

It is an arithmetic number, because the mean of its divisors is an integer number (110551050).

Almost surely, 2^221102099 is an apocalyptic number.

221102099 is a deficient number, since it is larger than the sum of its proper divisors (1).

221102099 is an equidigital number, since it uses as much as digits as its factorization.

221102099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 221102099 is about 14869.5023117790. The cubic root of 221102099 is about 604.6874500629.

The spelling of 221102099 in words is "two hundred twenty-one million, one hundred two thousand, ninety-nine".