12372122028 has 96 divisors (see below), whose sum is σ = 35116720128. Its totient is φ = 3309465600.

The previous prime is 12372122003. The next prime is 12372122029. The reversal of 12372122028 is 82022127321.

It is a junction number, because it is equal to n+sod(n) for n = 12372121986 and 12372122004.

It is not an unprimeable number, because it can be changed into a prime (12372122029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250068 + ... + 295428.

It is an arithmetic number, because the mean of its divisors is an integer number (365799168).

Almost surely, 2^12372122028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12372122028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17558360064).

12372122028 is an abundant number, since it is smaller than the sum of its proper divisors (22744598100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12372122028 is a wasteful number, since it uses less digits than its factorization.

12372122028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45583 (or 45581 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

Adding to 12372122028 its reverse (82022127321), we get a palindrome (94394249349).

The spelling of 12372122028 in words is "twelve billion, three hundred seventy-two million, one hundred twenty-two thousand, twenty-eight".