221375305374 has 16 divisors (see below), whose sum is σ = 443218151808. Its totient is φ = 73713844952.

The previous prime is 221375305363. The next prime is 221375305399. The reversal of 221375305374 is 473503573122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19474722 + ... + 19486085.

It is an arithmetic number, because the mean of its divisors is an integer number (27701134488).

Almost surely, 2^221375305374 is an apocalyptic number.

221375305374 is an abundant number, since it is smaller than the sum of its proper divisors (221842846434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221375305374 is a wasteful number, since it uses less digits than its factorization.

221375305374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38961759.

The product of its (nonzero) digits is 529200, while the sum is 42.

Adding to 221375305374 its reverse (473503573122), we get a palindrome (694878878496).

The spelling of 221375305374 in words is "two hundred twenty-one billion, three hundred seventy-five million, three hundred five thousand, three hundred seventy-four".