323211012222221 has 4 divisors (see below), whose sum is σ = 323211404154432. Its totient is φ = 323210620290012.

The previous prime is 323211012222193. The next prime is 323211012222223. The reversal of 323211012222221 is 122222210112323.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 323211012222221 - 2²² = 323211008027917 is a prime.

It is a super-4 number, since 4×323211012222221⁴ (a number of 59 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323211012222223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194726501 + ... + 196379306.

It is an arithmetic number, because the mean of its divisors is an integer number (80802851038608).

Almost surely, 2^{323211012222221} is an apocalyptic number.

It is an amenable number.

323211012222221 is a deficient number, since it is larger than the sum of its proper divisors (391932211).

323211012222221 is an equidigital number, since it uses as much as digits as its factorization.

323211012222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391932210.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 323211012222221 its reverse (122222210112323), we get a palindrome (445433222334544).

The spelling of 323211012222221 in words is "three hundred twenty-three trillion, two hundred eleven billion, twelve million, two hundred twenty-two thousand, two hundred twenty-one".