122021149 has 2 divisors, whose sum is σ = 122021150. Its totient is φ = 122021148.

The previous prime is 122021111. The next prime is 122021171. The reversal of 122021149 is 941120221.

It is an a-pointer prime, because the next prime (122021171) can be obtained adding 122021149 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100100025 + 21921124 = 10005^2 + 4682^2 .

It is a cyclic number.

It is not a de Polignac number, because 122021149 - 2⁹ = 122020637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122021749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61010574 + 61010575.

It is an arithmetic number, because the mean of its divisors is an integer number (61010575).

Almost surely, 2^122021149 is an apocalyptic number.

It is an amenable number.

122021149 is a deficient number, since it is larger than the sum of its proper divisors (1).

122021149 is an equidigital number, since it uses as much as digits as its factorization.

122021149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 122021149 is about 11046.3183459468. The cubic root of 122021149 is about 495.9962237941.

The spelling of 122021149 in words is "one hundred twenty-two million, twenty-one thousand, one hundred forty-nine".