222410521 has 4 divisors (see below), whose sum is σ = 224489232. Its totient is φ = 220331812.

The previous prime is 222410501. The next prime is 222410557. The reversal of 222410521 is 125014222.

222410521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 125014222 = 2 ⋅62507111.

It is a cyclic number.

It is not a de Polignac number, because 222410521 - 2¹⁹ = 221886233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222410501) 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, 1039195 + ... + 1039408.

It is an arithmetic number, because the mean of its divisors is an integer number (56122308).

Almost surely, 2^222410521 is an apocalyptic number.

It is an amenable number.

222410521 is a deficient number, since it is larger than the sum of its proper divisors (2078711).

222410521 is a wasteful number, since it uses less digits than its factorization.

222410521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078710.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 222410521 is about 14913.4342456726. The cubic root of 222410521 is about 605.8778967720.

Adding to 222410521 its reverse (125014222), we get a palindrome (347424743).

The spelling of 222410521 in words is "two hundred twenty-two million, four hundred ten thousand, five hundred twenty-one".