221902289371 has 8 divisors (see below), whose sum is σ = 253615235840. Its totient is φ = 190192497768.

The previous prime is 221902289363. The next prime is 221902289387. The reversal of 221902289371 is 173982209122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221902289371 - 2³ = 221902289363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221902289071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 636021 + ... + 921046.

It is an arithmetic number, because the mean of its divisors is an integer number (31701904480).

Almost surely, 2^221902289371 is an apocalyptic number.

221902289371 is a deficient number, since it is larger than the sum of its proper divisors (31712946469).

221902289371 is a wasteful number, since it uses less digits than its factorization.

221902289371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577433.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 221902289371 in words is "two hundred twenty-one billion, nine hundred two million, two hundred eighty-nine thousand, three hundred seventy-one".