122133145 has 4 divisors (see below), whose sum is σ = 146559780. Its totient is φ = 97706512.

The previous prime is 122133133. The next prime is 122133203. The reversal of 122133145 is 541331221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541331221 = 17 ⋅31843013.

It can be written as a sum of positive squares in 2 ways, for example, as 23011209 + 99121936 = 4797^2 + 9956^2 .

It is a cyclic number.

It is not a de Polignac number, because 122133145 - 2⁵ = 122133113 is a prime.

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, 12213310 + ... + 12213319.

It is an arithmetic number, because the mean of its divisors is an integer number (36639945).

Almost surely, 2^122133145 is an apocalyptic number.

It is an amenable number.

122133145 is a deficient number, since it is larger than the sum of its proper divisors (24426635).

122133145 is an equidigital number, since it uses as much as digits as its factorization.

122133145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24426634.

The product of its digits is 720, while the sum is 22.

The square root of 122133145 is about 11051.3865645900. The cubic root of 122133145 is about 496.1479259292.

Adding to 122133145 its reverse (541331221), we get a palindrome (663464366).

The spelling of 122133145 in words is "one hundred twenty-two million, one hundred thirty-three thousand, one hundred forty-five".