222055121 has 2 divisors, whose sum is σ = 222055122. Its totient is φ = 222055120.

The previous prime is 222055061. The next prime is 222055151. The reversal of 222055121 is 121550222.

It is a happy number.

222055121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114725521 + 107329600 = 10711^2 + 10360^2 .

It is a cyclic number.

It is not a de Polignac number, because 222055121 - 2¹⁰ = 222054097 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 222055093 and 222055102.

It is not a weakly prime, because it can be changed into another prime (222055151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111027560 + 111027561.

It is an arithmetic number, because the mean of its divisors is an integer number (111027561).

Almost surely, 2^222055121 is an apocalyptic number.

It is an amenable number.

222055121 is a deficient number, since it is larger than the sum of its proper divisors (1).

222055121 is an equidigital number, since it uses as much as digits as its factorization.

222055121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 222055121 is about 14901.5140505923. The cubic root of 222055121 is about 605.5550046711. Note that the first 3 decimals are identical.

The spelling of 222055121 in words is "two hundred twenty-two million, fifty-five thousand, one hundred twenty-one".