21233201112 has 32 divisors (see below), whose sum is σ = 58981114800. Its totient is φ = 7077733632.

The previous prime is 21233201107. The next prime is 21233201123. The reversal of 21233201112 is 21110233212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49150713 + ... + 49151144.

Almost surely, 2^21233201112 is an apocalyptic number.

It is an amenable number.

21233201112 is an abundant number, since it is smaller than the sum of its proper divisors (37747913688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21233201112 is a wasteful number, since it uses less digits than its factorization.

21233201112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98301872 (or 98301862 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21233201112 its reverse (21110233212), we get a palindrome (42343434324).

The spelling of 21233201112 in words is "twenty-one billion, two hundred thirty-three million, two hundred one thousand, one hundred twelve".