222120149 has 2 divisors, whose sum is σ = 222120150. Its totient is φ = 222120148.

The previous prime is 222120133. The next prime is 222120161. The reversal of 222120149 is 941021222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134977924 + 87142225 = 11618^2 + 9335^2 .

It is a cyclic number.

It is not a de Polignac number, because 222120149 - 2⁴ = 222120133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222120169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060074 + 111060075.

It is an arithmetic number, because the mean of its divisors is an integer number (111060075).

Almost surely, 2^222120149 is an apocalyptic number.

It is an amenable number.

222120149 is a deficient number, since it is larger than the sum of its proper divisors (1).

222120149 is an equidigital number, since it uses as much as digits as its factorization.

222120149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 222120149 is about 14903.6958168100. The cubic root of 222120149 is about 605.6141103974.

The spelling of 222120149 in words is "two hundred twenty-two million, one hundred twenty thousand, one hundred forty-nine".