21442433112 has 48 divisors (see below), whose sum is σ = 58530551040. Its totient is φ = 7091195328.

The previous prime is 21442433063. The next prime is 21442433119. The reversal of 21442433112 is 21133424412.

21442433112 is a `hidden beast` number, since 214 + 4 + 2 + 433 + 1 + 12 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21442433119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1163343 + ... + 1181630.

It is an arithmetic number, because the mean of its divisors is an integer number (1219386480).

Almost surely, 2^21442433112 is an apocalyptic number.

It is an amenable number.

21442433112 is an abundant number, since it is smaller than the sum of its proper divisors (37088117928).

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

21442433112 is a wasteful number, since it uses less digits than its factorization.

21442433112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345112 (or 2345105 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

Adding to 21442433112 its reverse (21133424412), we get a palindrome (42575857524).

The spelling of 21442433112 in words is "twenty-one billion, four hundred forty-two million, four hundred thirty-three thousand, one hundred twelve".