20312111233201 has 8 divisors (see below), whose sum is σ = 20418621585408. Its totient is φ = 20205602592000.

The previous prime is 20312111233171. The next prime is 20312111233217. The reversal of 20312111233201 is 10233211121302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20312111233201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20312111233901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28487121 + ... + 29191441.

It is an arithmetic number, because the mean of its divisors is an integer number (2552327698176).

Almost surely, 2^{20312111233201} is an apocalyptic number.

It is an amenable number.

20312111233201 is a deficient number, since it is larger than the sum of its proper divisors (106510352207).

20312111233201 is a wasteful number, since it uses less digits than its factorization.

20312111233201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855503.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20312111233201 its reverse (10233211121302), we get a palindrome (30545322354503).

The spelling of 20312111233201 in words is "twenty trillion, three hundred twelve billion, one hundred eleven million, two hundred thirty-three thousand, two hundred one".