12001031420 has 96 divisors (see below), whose sum is σ = 29629103616. Its totient is φ = 3998188800.

The previous prime is 12001031369. The next prime is 12001031453. The reversal of 12001031420 is 2413010021.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 12001031395 and 12001031404.

It is a congruent number.

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, 700355 + ... + 717285.

It is an arithmetic number, because the mean of its divisors is an integer number (308636496).

Almost surely, 2^12001031420 is an apocalyptic number.

12001031420 is a gapful number since it is divisible by the number (10) 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 12001031420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14814551808).

12001031420 is an abundant number, since it is smaller than the sum of its proper divisors (17628072196).

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

12001031420 is a wasteful number, since it uses less digits than its factorization.

12001031420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17091 (or 17089 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12001031420 its reverse (2413010021), we get a palindrome (14414041441).

The spelling of 12001031420 in words is "twelve billion, one million, thirty-one thousand, four hundred twenty".