21143100132 has 72 divisors (see below), whose sum is σ = 66632809152. Its totient is φ = 5491713600.

The previous prime is 21143100089. The next prime is 21143100133. The reversal of 21143100132 is 23100134112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (21143100133) 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 23 ways as a sum of consecutive naturals, for example, 3810919 + ... + 3816462.

Almost surely, 2^21143100132 is an apocalyptic number.

21143100132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21143100132 is an abundant number, since it is smaller than the sum of its proper divisors (45489709020).

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

21143100132 is a wasteful number, since it uses less digits than its factorization.

21143100132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7627409 (or 7627404 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 21143100132 its reverse (23100134112), we get a palindrome (44243234244).

The spelling of 21143100132 in words is "twenty-one billion, one hundred forty-three million, one hundred thousand, one hundred thirty-two".