221964098226 has 32 divisors (see below), whose sum is σ = 478148989248. Its totient is φ = 68286292800.

The previous prime is 221964098173. The next prime is 221964098233. The reversal of 221964098226 is 622890469122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310345 + ... + 735011.

It is an arithmetic number, because the mean of its divisors is an integer number (14942155914).

Almost surely, 2^221964098226 is an apocalyptic number.

221964098226 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

221964098226 is an abundant number, since it is smaller than the sum of its proper divisors (256184891022).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221964098226 is a wasteful number, since it uses less digits than its factorization.

221964098226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431386.

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 221964098226 in words is "two hundred twenty-one billion, nine hundred sixty-four million, ninety-eight thousand, two hundred twenty-six".