221875426228 has 24 divisors (see below), whose sum is σ = 408751616000. Its totient is φ = 105090213888.

The previous prime is 221875426207. The next prime is 221875426261. The reversal of 221875426228 is 822624578122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 858676 + ... + 1086772.

Almost surely, 2^221875426228 is an apocalyptic number.

It is an amenable number.

221875426228 is a deficient number, since it is larger than the sum of its proper divisors (186876189772).

221875426228 is a wasteful number, since it uses less digits than its factorization.

221875426228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240919 (or 240917 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 49.

The spelling of 221875426228 in words is "two hundred twenty-one billion, eight hundred seventy-five million, four hundred twenty-six thousand, two hundred twenty-eight".