221854998886 has 8 divisors (see below), whose sum is σ = 332795723040. Its totient is φ = 110923091208.

The previous prime is 221854998857. The next prime is 221854998917. The reversal of 221854998886 is 688899458122.

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

It is a super-2 number, since 2×221854998886² (a number of 23 digits) contains 22 as substring.

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, 2140846 + ... + 2242081.

It is an arithmetic number, because the mean of its divisors is an integer number (41599465380).

Almost surely, 2^221854998886 is an apocalyptic number.

221854998886 is a deficient number, since it is larger than the sum of its proper divisors (110940724154).

221854998886 is a wasteful number, since it uses less digits than its factorization.

221854998886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4408238.

The product of its digits is 159252480, while the sum is 70.

The spelling of 221854998886 in words is "two hundred twenty-one billion, eight hundred fifty-four million, nine hundred ninety-eight thousand, eight hundred eighty-six".