12031012026 has 64 divisors (see below), whose sum is σ = 29449405440. Its totient is φ = 3610347120.

The previous prime is 12031011961. The next prime is 12031012027. The reversal of 12031012026 is 62021013021.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12031012027) 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, 37140 + ... + 159503.

It is an arithmetic number, because the mean of its divisors is an integer number (460146960).

Almost surely, 2^12031012026 is an apocalyptic number.

12031012026 is an abundant number, since it is smaller than the sum of its proper divisors (17418393414).

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

12031012026 is a wasteful number, since it uses less digits than its factorization.

12031012026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196768 (or 196762 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12031012026 its reverse (62021013021), we get a palindrome (74052025047).

The spelling of 12031012026 in words is "twelve billion, thirty-one million, twelve thousand, twenty-six".