222222202120949 has 2 divisors, whose sum is σ = 222222202120950. Its totient is φ = 222222202120948.

The previous prime is 222222202120843. The next prime is 222222202120967. The reversal of 222222202120949 is 949021202222222.

222222202120949 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., 210041976480625 + 12180225640324 = 14492825^2 + 3490018^2 .

It is a cyclic number.

It is not a de Polignac number, because 222222202120949 - 2⁸ = 222222202120693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222222202120999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111111101060474 + 111111101060475.

It is an arithmetic number, because the mean of its divisors is an integer number (111111101060475).

Almost surely, 2^{222222202120949} is an apocalyptic number.

It is an amenable number.

222222202120949 is a deficient number, since it is larger than the sum of its proper divisors (1).

222222202120949 is an equidigital number, since it uses as much as digits as its factorization.

222222202120949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 222222202120949 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, two hundred two million, one hundred twenty thousand, nine hundred forty-nine".