221298739198 has 24 divisors (see below), whose sum is σ = 352930500864. Its totient is φ = 104049792000.

The previous prime is 221298739183. The next prime is 221298739229. The reversal of 221298739198 is 891937892122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 498958 + ... + 831598.

It is an arithmetic number, because the mean of its divisors is an integer number (14705437536).

Almost surely, 2^221298739198 is an apocalyptic number.

221298739198 is a deficient number, since it is larger than the sum of its proper divisors (131631761666).

221298739198 is a wasteful number, since it uses less digits than its factorization.

221298739198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333828 (or 333811 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 61.

The spelling of 221298739198 in words is "two hundred twenty-one billion, two hundred ninety-eight million, seven hundred thirty-nine thousand, one hundred ninety-eight".