221604410099 has 2 divisors, whose sum is σ = 221604410100. Its totient is φ = 221604410098.

The previous prime is 221604410077. The next prime is 221604410141. The reversal of 221604410099 is 990014406122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221604410099 - 2¹² = 221604406003 is a prime.

It is not a weakly prime, because it can be changed into another prime (221604410039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110802205049 + 110802205050.

It is an arithmetic number, because the mean of its divisors is an integer number (110802205050).

Almost surely, 2^221604410099 is an apocalyptic number.

221604410099 is a deficient number, since it is larger than the sum of its proper divisors (1).

221604410099 is an equidigital number, since it uses as much as digits as its factorization.

221604410099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 221604410099 in words is "two hundred twenty-one billion, six hundred four million, four hundred ten thousand, ninety-nine".