122152145 has 4 divisors (see below), whose sum is σ = 146582580. Its totient is φ = 97721712.

The previous prime is 122152117. The next prime is 122152153. The reversal of 122152145 is 541251221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17048641 + 105103504 = 4129^2 + 10252^2 .

It is a cyclic number.

It is not a de Polignac number, because 122152145 - 2⁶ = 122152081 is a prime.

It is a super-2 number, since 2×122152145² = 29842293056202050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122152145.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12215210 + ... + 12215219.

It is an arithmetic number, because the mean of its divisors is an integer number (36645645).

Almost surely, 2^122152145 is an apocalyptic number.

It is an amenable number.

122152145 is a deficient number, since it is larger than the sum of its proper divisors (24430435).

122152145 is an equidigital number, since it uses as much as digits as its factorization.

122152145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24430434.

The product of its digits is 800, while the sum is 23.

The square root of 122152145 is about 11052.2461518010. The cubic root of 122152145 is about 496.1736528297.

The spelling of 122152145 in words is "one hundred twenty-two million, one hundred fifty-two thousand, one hundred forty-five".