21422423132 has 12 divisors (see below), whose sum is σ = 40897353336. Its totient is φ = 9737465040.

The previous prime is 21422423101. The next prime is 21422423137. The reversal of 21422423132 is 23132422412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21422423137) 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, 243436583 + ... + 243436670.

It is an arithmetic number, because the mean of its divisors is an integer number (3408112778).

Almost surely, 2^21422423132 is an apocalyptic number.

21422423132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21422423132 is a deficient number, since it is larger than the sum of its proper divisors (19474930204).

21422423132 is a wasteful number, since it uses less digits than its factorization.

21422423132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486873268 (or 486873266 counting only the distinct ones).

The product of its digits is 4608, while the sum is 26.

Adding to 21422423132 its reverse (23132422412), we get a palindrome (44554845544).

The spelling of 21422423132 in words is "twenty-one billion, four hundred twenty-two million, four hundred twenty-three thousand, one hundred thirty-two".