221822869438 has 8 divisors (see below), whose sum is σ = 333564066720. Its totient is φ = 110634847200.

The previous prime is 221822869357. The next prime is 221822869441. The reversal of 221822869438 is 834968228122.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138292758 + ... + 138294361.

It is an arithmetic number, because the mean of its divisors is an integer number (41695508340).

Almost surely, 2^221822869438 is an apocalyptic number.

221822869438 is a deficient number, since it is larger than the sum of its proper divisors (111741197282).

221822869438 is a wasteful number, since it uses less digits than its factorization.

221822869438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276587522.

The product of its digits is 5308416, while the sum is 55.

The spelling of 221822869438 in words is "two hundred twenty-one billion, eight hundred twenty-two million, eight hundred sixty-nine thousand, four hundred thirty-eight".