13122420012 has 96 divisors (see below), whose sum is σ = 36668542400. Its totient is φ = 4034313216.

The previous prime is 13122419987. The next prime is 13122420029. The reversal of 13122420012 is 21002422131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2087418 + ... + 2093694.

Almost surely, 2^13122420012 is an apocalyptic number.

13122420012 is a gapful number since it is divisible by the number (12) 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 13122420012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18334271200).

13122420012 is an abundant number, since it is smaller than the sum of its proper divisors (23546122388).

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

13122420012 is a wasteful number, since it uses less digits than its factorization.

13122420012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7792 (or 7784 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 13122420012 its reverse (21002422131), we get a palindrome (34124842143).

The spelling of 13122420012 in words is "thirteen billion, one hundred twenty-two million, four hundred twenty thousand, twelve".