20111230233211 has 16 divisors (see below), whose sum is σ = 21715909387200. Its totient is φ = 18514801819008.

The previous prime is 20111230233181. The next prime is 20111230233217. The reversal of 20111230233211 is 11233203211102.

It is a cyclic number.

It is not a de Polignac number, because 20111230233211 - 2²³ = 20111221844603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20111230233217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36259485 + ... + 36809953.

It is an arithmetic number, because the mean of its divisors is an integer number (1357244336700).

Almost surely, 2^{20111230233211} is an apocalyptic number.

20111230233211 is a deficient number, since it is larger than the sum of its proper divisors (1604679153989).

20111230233211 is a wasteful number, since it uses less digits than its factorization.

20111230233211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557958.

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

Adding to 20111230233211 its reverse (11233203211102), we get a palindrome (31344433444313).

The spelling of 20111230233211 in words is "twenty trillion, one hundred eleven billion, two hundred thirty million, two hundred thirty-three thousand, two hundred eleven".