222121120349 has 2 divisors, whose sum is σ = 222121120350. Its totient is φ = 222121120348.

The previous prime is 222121120279. The next prime is 222121120357. The reversal of 222121120349 is 943021121222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 222100125625 + 20994724 = 471275^2 + 4582^2 .

It is a cyclic number.

It is not a de Polignac number, because 222121120349 - 2⁸ = 222121120093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222121180349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060560174 + 111060560175.

It is an arithmetic number, because the mean of its divisors is an integer number (111060560175).

Almost surely, 2^222121120349 is an apocalyptic number.

It is an amenable number.

222121120349 is a deficient number, since it is larger than the sum of its proper divisors (1).

222121120349 is an equidigital number, since it uses as much as digits as its factorization.

222121120349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 222121120349 in words is "two hundred twenty-two billion, one hundred twenty-one million, one hundred twenty thousand, three hundred forty-nine".