21230133111 has 12 divisors (see below), whose sum is σ = 33453543240. Its totient is φ = 12866747280.

The previous prime is 21230133101. The next prime is 21230133163. The reversal of 21230133111 is 11133103212.

21230133111 is a `hidden beast` number, since 21 + 2 + 301 + 331 + 11 = 666.

It is not a de Polignac number, because 21230133111 - 2¹³ = 21230124919 is a prime.

It is a super-3 number, since 3×21230133111³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230133101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107222796 + ... + 107222993.

It is an arithmetic number, because the mean of its divisors is an integer number (2787795270).

Almost surely, 2^21230133111 is an apocalyptic number.

21230133111 is a deficient number, since it is larger than the sum of its proper divisors (12223410129).

21230133111 is a wasteful number, since it uses less digits than its factorization.

21230133111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214445806 (or 214445803 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21230133111 its reverse (11133103212), we get a palindrome (32363236323).

The spelling of 21230133111 in words is "twenty-one billion, two hundred thirty million, one hundred thirty-three thousand, one hundred eleven".