21233113112 has 16 divisors (see below), whose sum is σ = 40406298360. Its totient is φ = 10458100224.

The previous prime is 21233113103. The next prime is 21233113117. The reversal of 21233113112 is 21131133212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233113117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19806473 + ... + 19807544.

Almost surely, 2^21233113112 is an apocalyptic number.

It is an amenable number.

21233113112 is a deficient number, since it is larger than the sum of its proper divisors (19173185248).

21233113112 is a wasteful number, since it uses less digits than its factorization.

21233113112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39614090 (or 39614086 counting only the distinct ones).

The product of its digits is 216, while the sum is 20.

Adding to 21233113112 its reverse (21131133212), we get a palindrome (42364246324).

The spelling of 21233113112 in words is "twenty-one billion, two hundred thirty-three million, one hundred thirteen thousand, one hundred twelve".