221773131416 has 32 divisors (see below), whose sum is σ = 419806333440. Its totient is φ = 109825248288.

The previous prime is 221773131409. The next prime is 221773131421. The reversal of 221773131416 is 614131377122.

It is a self number, because there is not a number n which added to its sum of digits gives 221773131416.

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, 4067165 + ... + 4121331.

It is an arithmetic number, because the mean of its divisors is an integer number (13118947920).

Almost surely, 2^221773131416 is an apocalyptic number.

It is an amenable number.

221773131416 is a deficient number, since it is larger than the sum of its proper divisors (198033202024).

221773131416 is a wasteful number, since it uses less digits than its factorization.

221773131416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59063 (or 59059 counting only the distinct ones).

The product of its digits is 42336, while the sum is 38.

The spelling of 221773131416 in words is "two hundred twenty-one billion, seven hundred seventy-three million, one hundred thirty-one thousand, four hundred sixteen".