122020144 has 10 divisors (see below), whose sum is σ = 236414060. Its totient is φ = 61010064.

The previous prime is 122020133. The next prime is 122020153. The reversal of 122020144 is 441020221.

It is a Harshad number since it is a multiple of its sum of digits (16), and also a Moran number because the ratio is a prime number: 7626259 = 122020144 / (1 + 2 + 2 + 0 + 2 + 0 + 1 + 4 + 4).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3813114 + ... + 3813145.

It is an arithmetic number, because the mean of its divisors is an integer number (23641406).

Almost surely, 2^122020144 is an apocalyptic number.

It is an amenable number.

122020144 is a deficient number, since it is larger than the sum of its proper divisors (114393916).

122020144 is an equidigital number, since it uses as much as digits as its factorization.

122020144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7626267 (or 7626261 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 122020144 is about 11046.2728555835. The cubic root of 122020144 is about 495.9948620696.

Adding to 122020144 its reverse (441020221), we get a palindrome (563040365).

The spelling of 122020144 in words is "one hundred twenty-two million, twenty thousand, one hundred forty-four".