21031213022133 has 8 divisors (see below), whose sum is σ = 28116795963168. Its totient is φ = 13983219381264.

The previous prime is 21031213022123. The next prime is 21031213022161. The reversal of 21031213022133 is 33122031213012.

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

It is not a de Polignac number, because 21031213022133 - 2¹⁶ = 21031212956597 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21031213022123) 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, 9397323735 + ... + 9397325972.

It is an arithmetic number, because the mean of its divisors is an integer number (3514599495396).

Almost surely, 2^{21031213022133} is an apocalyptic number.

It is an amenable number.

21031213022133 is a deficient number, since it is larger than the sum of its proper divisors (7085582941035).

21031213022133 is a wasteful number, since it uses less digits than its factorization.

21031213022133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18794650083.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21031213022133 its reverse (33122031213012), we get a palindrome (54153244235145).

The spelling of 21031213022133 in words is "twenty-one trillion, thirty-one billion, two hundred thirteen million, twenty-two thousand, one hundred thirty-three".