21788301133 has 8 divisors (see below), whose sum is σ = 21833556128. Its totient is φ = 21743094384.

The previous prime is 21788301127. The next prime is 21788301137. The reversal of 21788301133 is 33110388712.

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 21788301133 - 2⁹ = 21788300621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21788301092 and 21788301101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21788301137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 973810 + ... + 995932.

It is an arithmetic number, because the mean of its divisors is an integer number (2729194516).

Almost surely, 2^21788301133 is an apocalyptic number.

It is an amenable number.

21788301133 is a deficient number, since it is larger than the sum of its proper divisors (45254995).

21788301133 is a wasteful number, since it uses less digits than its factorization.

21788301133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24123.

The product of its (nonzero) digits is 24192, while the sum is 37.

Adding to 21788301133 its reverse (33110388712), we get a palindrome (54898689845).

The spelling of 21788301133 in words is "twenty-one billion, seven hundred eighty-eight million, three hundred one thousand, one hundred thirty-three".