122544522251 has 4 divisors (see below), whose sum is σ = 122619843192. Its totient is φ = 122469201312.

The previous prime is 122544522227. The next prime is 122544522299. The reversal of 122544522251 is 152225445221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152225445221 = 333419 ⋅456559.

It is a cyclic number.

It is not a de Polignac number, because 122544522251 - 2¹⁰ = 122544521227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122444522251) 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, 37658030 + ... + 37661283.

It is an arithmetic number, because the mean of its divisors is an integer number (30654960798).

Almost surely, 2^122544522251 is an apocalyptic number.

122544522251 is a deficient number, since it is larger than the sum of its proper divisors (75320941).

122544522251 is an equidigital number, since it uses as much as digits as its factorization.

122544522251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75320940.

The product of its digits is 64000, while the sum is 35.

Adding to 122544522251 its reverse (152225445221), we get a palindrome (274769967472).

The spelling of 122544522251 in words is "one hundred twenty-two billion, five hundred forty-four million, five hundred twenty-two thousand, two hundred fifty-one".