222854521 has 4 divisors (see below), whose sum is σ = 232543872. Its totient is φ = 213165172.

The previous prime is 222854519. The next prime is 222854537. The reversal of 222854521 is 125458222.

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, and also an emirpimes, since its reverse is a distinct semiprime: 125458222 = 2 ⋅62729111.

It is a cyclic number.

It is not a de Polignac number, because 222854521 - 2¹ = 222854519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222854551) 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, 4844641 + ... + 4844686.

It is an arithmetic number, because the mean of its divisors is an integer number (58135968).

Almost surely, 2^222854521 is an apocalyptic number.

It is an amenable number.

222854521 is a deficient number, since it is larger than the sum of its proper divisors (9689351).

222854521 is an equidigital number, since it uses as much as digits as its factorization.

222854521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9689350.

The product of its digits is 12800, while the sum is 31.

The square root of 222854521 is about 14928.3127311830. The cubic root of 222854521 is about 606.2808018360.

The spelling of 222854521 in words is "two hundred twenty-two million, eight hundred fifty-four thousand, five hundred twenty-one".