122100144 has 20 divisors (see below), whose sum is σ = 315425496. Its totient is φ = 40700032.

The previous prime is 122100133. The next prime is 122100149. The reversal of 122100144 is 441001221.

It is not an unprimeable number, because it can be changed into a prime (122100149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1271829 + ... + 1271924.

Almost surely, 2^122100144 is an apocalyptic number.

It is an amenable number.

122100144 is an abundant number, since it is smaller than the sum of its proper divisors (193325352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122100144 is a wasteful number, since it uses less digits than its factorization.

122100144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543764 (or 2543758 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 122100144 is about 11049.8933931509. The cubic root of 122100144 is about 496.1032346686.

Adding to 122100144 its reverse (441001221), we get a palindrome (563101365).

The spelling of 122100144 in words is "one hundred twenty-two million, one hundred thousand, one hundred forty-four".