221002321099 has 12 divisors (see below), whose sum is σ = 257099087784. Its totient is φ = 189419688864.

The previous prime is 221002321091. The next prime is 221002321117. The reversal of 221002321099 is 990123200122.

It is not a de Polignac number, because 221002321099 - 2³ = 221002321091 is a prime.

It is a super-2 number, since 2×221002321099² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221002321099.

It is not an unprimeable number, because it can be changed into a prime (221002321091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 800527 + ... + 1040599.

It is an arithmetic number, because the mean of its divisors is an integer number (21424923982).

Almost surely, 2^221002321099 is an apocalyptic number.

221002321099 is a deficient number, since it is larger than the sum of its proper divisors (36096766685).

221002321099 is a wasteful number, since it uses less digits than its factorization.

221002321099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258874 (or 258867 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 221002321099 in words is "two hundred twenty-one billion, two million, three hundred twenty-one thousand, ninety-nine".