21141112112 has 20 divisors (see below), whose sum is σ = 41832414816. Its totient is φ = 10345650240.

The previous prime is 21141112087. The next prime is 21141112117. The reversal of 21141112112 is 21121114112.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (21141112117) 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, 14055839 + ... + 14057342.

Almost surely, 2^21141112112 is an apocalyptic number.

It is an amenable number.

21141112112 is a deficient number, since it is larger than the sum of its proper divisors (20691302704).

21141112112 is a wasteful number, since it uses less digits than its factorization.

21141112112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28113236 (or 28113230 counting only the distinct ones).

The product of its digits is 32, while the sum is 17.

Adding to 21141112112 its reverse (21121114112), we get a palindrome (42262226224).

The spelling of 21141112112 in words is "twenty-one billion, one hundred forty-one million, one hundred twelve thousand, one hundred twelve".