21310033233 has 8 divisors (see below), whose sum is σ = 28440468000. Its totient is φ = 14193143648.

The previous prime is 21310033229. The next prime is 21310033253. The reversal of 21310033233 is 33233001312.

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 21310033233 - 2² = 21310033229 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21310033253) 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, 3382623 + ... + 3388916.

It is an arithmetic number, because the mean of its divisors is an integer number (3555058500).

Almost surely, 2^21310033233 is an apocalyptic number.

It is an amenable number.

21310033233 is a deficient number, since it is larger than the sum of its proper divisors (7130434767).

21310033233 is a wasteful number, since it uses less digits than its factorization.

21310033233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6772591.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 21310033233 its reverse (33233001312), we get a palindrome (54543034545).

The spelling of 21310033233 in words is "twenty-one billion, three hundred ten million, thirty-three thousand, two hundred thirty-three".