21042100132 has 48 divisors (see below), whose sum is σ = 39727896768. Its totient is φ = 9715875840.

The previous prime is 21042100117. The next prime is 21042100139. The reversal of 21042100132 is 23100124012.

It is a super-2 number, since 2×21042100132² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21042100139) 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 15 ways as a sum of consecutive naturals, for example, 1161907 + ... + 1179877.

It is an arithmetic number, because the mean of its divisors is an integer number (827664516).

Almost surely, 2^21042100132 is an apocalyptic number.

It is an amenable number.

21042100132 is a deficient number, since it is larger than the sum of its proper divisors (18685796636).

21042100132 is a wasteful number, since it uses less digits than its factorization.

21042100132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18316 (or 18314 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21042100132 its reverse (23100124012), we get a palindrome (44142224144).

The spelling of 21042100132 in words is "twenty-one billion, forty-two million, one hundred thousand, one hundred thirty-two".