21443233122 has 12 divisors (see below), whose sum is σ = 46460338470. Its totient is φ = 7147744368.

The previous prime is 21443233073. The next prime is 21443233127. The reversal of 21443233122 is 22133234412.

21443233122 is a `hidden beast` number, since 21 + 4 + 4 + 323 + 312 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21391695081 + 51538041 = 146259^2 + 7179^2 .

It is not an unprimeable number, because it can be changed into a prime (21443233127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 595645347 + ... + 595645382.

Almost surely, 2^21443233122 is an apocalyptic number.

21443233122 is an abundant number, since it is smaller than the sum of its proper divisors (25017105348).

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

21443233122 is a wasteful number, since it uses less digits than its factorization.

21443233122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191290737 (or 1191290734 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 21443233122 its reverse (22133234412), we get a palindrome (43576467534).

The spelling of 21443233122 in words is "twenty-one billion, four hundred forty-three million, two hundred thirty-three thousand, one hundred twenty-two".