212122022333321 has 4 divisors (see below), whose sum is σ = 212529166330644. Its totient is φ = 211714878336000.

The previous prime is 212122022333261. The next prime is 212122022333363. The reversal of 212122022333321 is 123333220221212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 144996855263296 + 67125167070025 = 12041464^2 + 8192995^2 .

It is a cyclic number.

It is not a de Polignac number, because 212122022333321 - 2²⁶ = 212121955224457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212122022383321) 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, 203571997880 + ... + 203571998921.

It is an arithmetic number, because the mean of its divisors is an integer number (53132291582661).

Almost surely, 2^{212122022333321} is an apocalyptic number.

It is an amenable number.

212122022333321 is a deficient number, since it is larger than the sum of its proper divisors (407143997323).

212122022333321 is an equidigital number, since it uses as much as digits as its factorization.

212122022333321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407143997322.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 212122022333321 its reverse (123333220221212), we get a palindrome (335455242554533).

The spelling of 212122022333321 in words is "two hundred twelve trillion, one hundred twenty-two billion, twenty-two million, three hundred thirty-three thousand, three hundred twenty-one".