221013211321 has 8 divisors (see below), whose sum is σ = 252829640960. Its totient is φ = 189257560128.

The previous prime is 221013211277. The next prime is 221013211333. The reversal of 221013211321 is 123112310122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221013211321 - 2¹¹ = 221013209273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221013211621) by changing a digit.

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, 15186816 + ... + 15201361.

It is an arithmetic number, because the mean of its divisors is an integer number (31603705120).

Almost surely, 2^221013211321 is an apocalyptic number.

It is an amenable number.

221013211321 is a deficient number, since it is larger than the sum of its proper divisors (31816429639).

221013211321 is a wasteful number, since it uses less digits than its factorization.

221013211321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30389223.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 221013211321 its reverse (123112310122), we get a palindrome (344125521443).

The spelling of 221013211321 in words is "two hundred twenty-one billion, thirteen million, two hundred eleven thousand, three hundred twenty-one".