21310332133 has 8 divisors (see below), whose sum is σ = 22881683520. Its totient is φ = 19774292160.

The previous prime is 21310332107. The next prime is 21310332143. The reversal of 21310332133 is 33123301312.

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 21310332133 - 2⁵ = 21310332101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310332143) 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, 8826603 + ... + 8829016.

It is an arithmetic number, because the mean of its divisors is an integer number (2860210440).

Almost surely, 2^21310332133 is an apocalyptic number.

It is an amenable number.

21310332133 is a deficient number, since it is larger than the sum of its proper divisors (1571351387).

21310332133 is a wasteful number, since it uses less digits than its factorization.

21310332133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17655707.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21310332133 its reverse (33123301312), we get a palindrome (54433633445).

The spelling of 21310332133 in words is "twenty-one billion, three hundred ten million, three hundred thirty-two thousand, one hundred thirty-three".