221755015472 has 10 divisors (see below), whose sum is σ = 429650342508. Its totient is φ = 110877507728.

The previous prime is 221755015463. The next prime is 221755015511. The reversal of 221755015472 is 274510557122.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6929844218 + ... + 6929844249.

Almost surely, 2^221755015472 is an apocalyptic number.

It is an amenable number.

221755015472 is a deficient number, since it is larger than the sum of its proper divisors (207895327036).

221755015472 is a wasteful number, since it uses less digits than its factorization.

221755015472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13859688475 (or 13859688469 counting only the distinct ones).

The product of its (nonzero) digits is 196000, while the sum is 41.

The spelling of 221755015472 in words is "two hundred twenty-one billion, seven hundred fifty-five million, fifteen thousand, four hundred seventy-two".