21112421112 has 48 divisors (see below), whose sum is σ = 58724872440. Its totient is φ = 6847270848.

The previous prime is 21112421101. The next prime is 21112421131.

21112421112 is a `hidden beast` number, since 21 + 112 + 421 + 112 = 666.

21112421112 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×21112421112³ (a number of 32 digits) contains 333 as substring.

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

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3959878 + ... + 3965205.

Almost surely, 2^21112421112 is an apocalyptic number.

It is an amenable number.

21112421112 is an abundant number, since it is smaller than the sum of its proper divisors (37612451328).

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

21112421112 is a wasteful number, since it uses less digits than its factorization.

21112421112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7925132 (or 7925125 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

The spelling of 21112421112 in words is "twenty-one billion, one hundred twelve million, four hundred twenty-one thousand, one hundred twelve".