21033132501 has 8 divisors (see below), whose sum is σ = 28044956160. Its totient is φ = 14021698592.

The previous prime is 21033132493. The next prime is 21033132503. The reversal of 21033132501 is 10523133012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21033132501 - 2³ = 21033132493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033132503) 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, 69196 + ... + 216458.

It is an arithmetic number, because the mean of its divisors is an integer number (3505619520).

Almost surely, 2^21033132501 is an apocalyptic number.

It is an amenable number.

21033132501 is a deficient number, since it is larger than the sum of its proper divisors (7011823659).

21033132501 is a wasteful number, since it uses less digits than its factorization.

21033132501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194875.

The product of its (nonzero) digits is 540, while the sum is 21.

Adding to 21033132501 its reverse (10523133012), we get a palindrome (31556265513).

The spelling of 21033132501 in words is "twenty-one billion, thirty-three million, one hundred thirty-two thousand, five hundred one".