12072281001838 has 32 divisors (see below), whose sum is σ = 18256893117120. Its totient is φ = 5986845112320.

The previous prime is 12072281001721. The next prime is 12072281001841. The reversal of 12072281001838 is 83810018227021.

It is a junction number, because it is equal to n+sod(n) for n = 12072281001794 and 12072281001803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1139211556 + ... + 1139222152.

It is an arithmetic number, because the mean of its divisors is an integer number (570527909910).

Almost surely, 2^{12072281001838} is an apocalyptic number.

12072281001838 is a deficient number, since it is larger than the sum of its proper divisors (6184612115282).

12072281001838 is a wasteful number, since it uses less digits than its factorization.

12072281001838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19372.

The product of its (nonzero) digits is 86016, while the sum is 43.

Adding to 12072281001838 its reverse (83810018227021), we get a palindrome (95882299228859).

The spelling of 12072281001838 in words is "twelve trillion, seventy-two billion, two hundred eighty-one million, one thousand, eight hundred thirty-eight".