20211231133233 has 48 divisors (see below), whose sum is σ = 33694280780160. Its totient is φ = 11435293594368.

The previous prime is 20211231133183. The next prime is 20211231133243. The reversal of 20211231133233 is 33233113211202.

20211231133233 is a `hidden beast` number, since 2 + 0 + 2 + 1 + 12 + 311 + 332 + 3 + 3 = 666.

It is not a de Polignac number, because 20211231133233 - 2¹⁴ = 20211231116849 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20211231133197 and 20211231133206.

It is not an unprimeable number, because it can be changed into a prime (20211231133243) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8767941 + ... + 10830477.

It is an arithmetic number, because the mean of its divisors is an integer number (701964182920).

Almost surely, 2^{20211231133233} is an apocalyptic number.

It is an amenable number.

20211231133233 is a deficient number, since it is larger than the sum of its proper divisors (13483049646927).

20211231133233 is a wasteful number, since it uses less digits than its factorization.

20211231133233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064086 (or 2064083 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 20211231133233 its reverse (33233113211202), we get a palindrome (53444344344435).

The spelling of 20211231133233 in words is "twenty trillion, two hundred eleven billion, two hundred thirty-one million, one hundred thirty-three thousand, two hundred thirty-three".