222500101 has 2 divisors, whose sum is σ = 222500102. Its totient is φ = 222500100.

The previous prime is 222500077. The next prime is 222500111. The reversal of 222500101 is 101005222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 216972900 + 5527201 = 14730^2 + 2351^2 .

It is a cyclic number.

It is not a de Polignac number, because 222500101 - 2²⁷ = 88282373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222500111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111250050 + 111250051.

It is an arithmetic number, because the mean of its divisors is an integer number (111250051).

Almost surely, 2^222500101 is an apocalyptic number.

It is an amenable number.

222500101 is a deficient number, since it is larger than the sum of its proper divisors (1).

222500101 is an equidigital number, since it uses as much as digits as its factorization.

222500101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 222500101 is about 14916.4372757036. The cubic root of 222500101 is about 605.9592287412.

Adding to 222500101 its reverse (101005222), we get a palindrome (323505323).

The spelling of 222500101 in words is "two hundred twenty-two million, five hundred thousand, one hundred one".