21342132132 has 24 divisors (see below), whose sum is σ = 49810572000. Its totient is φ = 7112292096.

The previous prime is 21342132131. The next prime is 21342132143. The reversal of 21342132132 is 23123124312.

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

It is not an unprimeable number, because it can be changed into a prime (21342132131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167757 + ... + 266132.

It is an arithmetic number, because the mean of its divisors is an integer number (2075440500).

Almost surely, 2^21342132132 is an apocalyptic number.

It is an amenable number.

21342132132 is an abundant number, since it is smaller than the sum of its proper divisors (28468439868).

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

21342132132 is a wasteful number, since it uses less digits than its factorization.

21342132132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437995 (or 437993 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

Adding to 21342132132 its reverse (23123124312), we get a palindrome (44465256444).

The spelling of 21342132132 in words is "twenty-one billion, three hundred forty-two million, one hundred thirty-two thousand, one hundred thirty-two".