122144220425 has 12 divisors (see below), whose sum is σ = 151787391756. Its totient is φ = 97503403200.

The previous prime is 122144220391. The next prime is 122144220437. The reversal of 122144220425 is 524022441221.

It can be written as a sum of positive squares in 6 ways, for example, as 34904327929 + 87239892496 = 186827^2 + 295364^2 .

It is not a de Polignac number, because 122144220425 - 2⁶ = 122144220361 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5287574 + ... + 5310623.

It is an arithmetic number, because the mean of its divisors is an integer number (12648949313).

Almost surely, 2^122144220425 is an apocalyptic number.

It is an amenable number.

122144220425 is a deficient number, since it is larger than the sum of its proper divisors (29643171331).

122144220425 is a wasteful number, since it uses less digits than its factorization.

122144220425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10598668 (or 10598663 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

Adding to 122144220425 its reverse (524022441221), we get a palindrome (646166661646).

The spelling of 122144220425 in words is "one hundred twenty-two billion, one hundred forty-four million, two hundred twenty thousand, four hundred twenty-five".