222114521 has 2 divisors, whose sum is σ = 222114522. Its totient is φ = 222114520.

The previous prime is 222114511. The next prime is 222114523. The reversal of 222114521 is 125411222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196308121 + 25806400 = 14011^2 + 5080^2 .

It is a cyclic number.

It is not a de Polignac number, because 222114521 - 2⁶ = 222114457 is a prime.

Together with 222114523, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 222114493 and 222114502.

It is not a weakly prime, because it can be changed into another prime (222114523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111057260 + 111057261.

It is an arithmetic number, because the mean of its divisors is an integer number (111057261).

Almost surely, 2^222114521 is an apocalyptic number.

It is an amenable number.

222114521 is a deficient number, since it is larger than the sum of its proper divisors (1).

222114521 is an equidigital number, since it uses as much as digits as its factorization.

222114521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 320, while the sum is 20.

The square root of 222114521 is about 14903.5070033868. The cubic root of 222114521 is about 605.6089954104.

Adding to 222114521 its reverse (125411222), we get a palindrome (347525743).

The spelling of 222114521 in words is "two hundred twenty-two million, one hundred fourteen thousand, five hundred twenty-one".