222200521 has 2 divisors, whose sum is σ = 222200522. Its totient is φ = 222200520.

The previous prime is 222200509. The next prime is 222200567. The reversal of 222200521 is 125002222.

222200521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133633600 + 88566921 = 11560^2 + 9411^2 .

It is a cyclic number.

It is not a de Polignac number, because 222200521 - 2¹⁹ = 221676233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222200495 and 222200504.

It is not a weakly prime, because it can be changed into another prime (222200501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111100260 + 111100261.

It is an arithmetic number, because the mean of its divisors is an integer number (111100261).

Almost surely, 2^222200521 is an apocalyptic number.

It is an amenable number.

222200521 is a deficient number, since it is larger than the sum of its proper divisors (1).

222200521 is an equidigital number, since it uses as much as digits as its factorization.

222200521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 222200521 is about 14906.3919511061. The cubic root of 222200521 is about 605.6871467666.

Adding to 222200521 its reverse (125002222), we get a palindrome (347202743).

The spelling of 222200521 in words is "two hundred twenty-two million, two hundred thousand, five hundred twenty-one".