122001204578 has 18 divisors (see below), whose sum is σ = 201159705537. Its totient is φ = 55452623160.

The previous prime is 122001204557. The next prime is 122001204587. The reversal of 122001204578 is 875402100221.

122001204578 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 98579044729 + 23422159849 = 313973^2 + 153043^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=246983.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5422400 + ... + 5444852.

Almost surely, 2^122001204578 is an apocalyptic number.

122001204578 is a deficient number, since it is larger than the sum of its proper divisors (79158500959).

122001204578 is an frugal number, since it uses more digits than its factorization.

122001204578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44930 (or 22466 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

Multiplying 122001204578 by its sum of digits (32), we get a square (3904038546496 = 1975864²).

Adding to 122001204578 its reverse (875402100221), we get a palindrome (997403304799).

The spelling of 122001204578 in words is "one hundred twenty-two billion, one million, two hundred four thousand, five hundred seventy-eight".