21432220112 has 20 divisors (see below), whose sum is σ = 42228740640. Its totient is φ = 10534480608.

The previous prime is 21432220097. The next prime is 21432220151. The reversal of 21432220112 is 21102223412.

It is a super-3 number, since 3×21432220112³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11350868 + ... + 11352755.

It is an arithmetic number, because the mean of its divisors is an integer number (2111437032).

Almost surely, 2^21432220112 is an apocalyptic number.

It is an amenable number.

21432220112 is a deficient number, since it is larger than the sum of its proper divisors (20796520528).

21432220112 is a wasteful number, since it uses less digits than its factorization.

21432220112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22703690 (or 22703684 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21432220112 its reverse (21102223412), we get a palindrome (42534443524).

The spelling of 21432220112 in words is "twenty-one billion, four hundred thirty-two million, two hundred twenty thousand, one hundred twelve".