122320515272 has 12 divisors (see below), whose sum is σ = 229352820945. Its totient is φ = 61159763024.

The previous prime is 122320515223. The next prime is 122320515277. The reversal of 122320515272 is 272515023221.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 116154182596 + 6166332676 = 340814^2 + 78526^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=247306.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122320515277) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 927398 + ... + 1051050.

Almost surely, 2^122320515272 is an apocalyptic number.

It is an amenable number.

122320515272 is a deficient number, since it is larger than the sum of its proper divisors (107032305673).

122320515272 is an frugal number, since it uses more digits than its factorization.

122320515272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247312 (or 123655 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

Multiplying 122320515272 by its sum of digits (32), we get a square (3914256488704 = 1978448²).

Adding to 122320515272 its reverse (272515023221), we get a palindrome (394835538493).

The spelling of 122320515272 in words is "one hundred twenty-two billion, three hundred twenty million, five hundred fifteen thousand, two hundred seventy-two".