23121422412 has 96 divisors (see below), whose sum is σ = 62369395200. Its totient is φ = 6599846400.

The previous prime is 23121422393. The next prime is 23121422413. The reversal of 23121422412 is 21422412132.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (23121422413) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83289 + ... + 230607.

It is an arithmetic number, because the mean of its divisors is an integer number (649681200).

Almost surely, 2^23121422412 is an apocalyptic number.

23121422412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23121422412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31184697600).

23121422412 is an abundant number, since it is smaller than the sum of its proper divisors (39247972788).

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

23121422412 is a wasteful number, since it uses less digits than its factorization.

23121422412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147407 (or 147405 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

Adding to 23121422412 its reverse (21422412132), we get a palindrome (44543834544).

The spelling of 23121422412 in words is "twenty-three billion, one hundred twenty-one million, four hundred twenty-two thousand, four hundred twelve".