222920315521 has 4 divisors (see below), whose sum is σ = 222940076992. Its totient is φ = 222900554052.

The previous prime is 222920315509. The next prime is 222920315533. The reversal of 222920315521 is 125513029222.

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 an interprime number because it is at equal distance from previous prime (222920315509) and next prime (222920315533).

It is a cyclic number.

It is not a de Polignac number, because 222920315521 - 2¹⁹ = 222919791233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222920315921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9863805 + ... + 9886378.

It is an arithmetic number, because the mean of its divisors is an integer number (55735019248).

Almost surely, 2^222920315521 is an apocalyptic number.

It is an amenable number.

222920315521 is a deficient number, since it is larger than the sum of its proper divisors (19761471).

222920315521 is a wasteful number, since it uses less digits than its factorization.

222920315521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19761470.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 222920315521 in words is "two hundred twenty-two billion, nine hundred twenty million, three hundred fifteen thousand, five hundred twenty-one".