221323332222021 has 8 divisors (see below), whose sum is σ = 297421380834304. Its totient is φ = 146387085878880.

The previous prime is 221323332222019. The next prime is 221323332222067. The reversal of 221323332222021 is 120222233323122.

It is a happy number.

221323332222021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 221323332222021 - 2¹ = 221323332222019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221323332222021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221325332222021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290450566840 + ... + 290450567601.

It is an arithmetic number, because the mean of its divisors is an integer number (37177672604288).

Almost surely, 2^{221323332222021} is an apocalyptic number.

It is an amenable number.

221323332222021 is a deficient number, since it is larger than the sum of its proper divisors (76098048612283).

221323332222021 is a wasteful number, since it uses less digits than its factorization.

221323332222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580901134571.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 221323332222021 its reverse (120222233323122), we get a palindrome (341545565545143).

The spelling of 221323332222021 in words is "two hundred twenty-one trillion, three hundred twenty-three billion, three hundred thirty-two million, two hundred twenty-two thousand, twenty-one".