21113201210112 has 216 divisors, whose sum is σ = 67534189894080. Its totient is φ = 6289499658240.

The previous prime is 21113201210041. The next prime is 21113201210117. The reversal of 21113201210112 is 21101210231112.

It is a happy number.

21113201210112 is a `hidden beast` number, since 2 + 111 + 320 + 121 + 0 + 112 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (21113201210117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5564578 + ... + 8555169.

Almost surely, 2^{21113201210112} is an apocalyptic number.

21113201210112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21113201210112 is an abundant number, since it is smaller than the sum of its proper divisors (46420988683968).

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

21113201210112 is a wasteful number, since it uses less digits than its factorization.

21113201210112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14119839 (or 14119822 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 21113201210112 its reverse (21101210231112), we get a palindrome (42214411441224).

The spelling of 21113201210112 in words is "twenty-one trillion, one hundred thirteen billion, two hundred one million, two hundred ten thousand, one hundred twelve".