222121330033021 has 4 divisors (see below), whose sum is σ = 222125213941344. Its totient is φ = 222117446124700.

The previous prime is 222121330033019. The next prime is 222121330033027. The reversal of 222121330033021 is 120330033121222.

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 222121330033021 - 2¹ = 222121330033019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222121330033027) 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 3 ways as a sum of consecutive naturals, for example, 1941868375 + ... + 1941982756.

It is an arithmetic number, because the mean of its divisors is an integer number (55531303485336).

Almost surely, 2^{222121330033021} is an apocalyptic number.

It is an amenable number.

222121330033021 is a deficient number, since it is larger than the sum of its proper divisors (3883908323).

222121330033021 is an equidigital number, since it uses as much as digits as its factorization.

222121330033021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3883908322.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 222121330033021 its reverse (120330033121222), we get a palindrome (342451363154243).

The spelling of 222121330033021 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, three hundred thirty million, thirty-three thousand, twenty-one".