223211341631721 has 16 divisors (see below), whose sum is σ = 315123038941824. Its totient is φ = 140053666308864.

The previous prime is 223211341631713. The next prime is 223211341631743. The reversal of 223211341631721 is 127136143112322.

It is not a de Polignac number, because 223211341631721 - 2³ = 223211341631713 is a prime.

It is a super-3 number, since 3×223211341631721³ (a number of 44 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223211341631721.

It is not an unprimeable number, because it can be changed into a prime (223211341611721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6478915 + ... + 22099751.

It is an arithmetic number, because the mean of its divisors is an integer number (19695189933864).

Almost surely, 2^{223211341631721} is an apocalyptic number.

It is an amenable number.

223211341631721 is a deficient number, since it is larger than the sum of its proper divisors (91911697310103).

223211341631721 is a wasteful number, since it uses less digits than its factorization.

223211341631721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15901040.

The product of its digits is 72576, while the sum is 39.

The spelling of 223211341631721 in words is "two hundred twenty-three trillion, two hundred eleven billion, three hundred forty-one million, six hundred thirty-one thousand, seven hundred twenty-one".