21313002123133 has 16 divisors (see below), whose sum is σ = 25032925142784. Its totient is φ = 17762547991680.

The previous prime is 21313002123121. The next prime is 21313002123163. The reversal of 21313002123133 is 33132120031312.

It is not a de Polignac number, because 21313002123133 - 2²¹ = 21313000025981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21313002123098 and 21313002123107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313002123163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27398185 + ... + 28165342.

It is an arithmetic number, because the mean of its divisors is an integer number (1564557821424).

Almost surely, 2^{21313002123133} is an apocalyptic number.

It is an amenable number.

21313002123133 is a deficient number, since it is larger than the sum of its proper divisors (3719923019651).

21313002123133 is a wasteful number, since it uses less digits than its factorization.

21313002123133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55565052.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21313002123133 its reverse (33132120031312), we get a palindrome (54445122154445).

The spelling of 21313002123133 in words is "twenty-one trillion, three hundred thirteen billion, two million, one hundred twenty-three thousand, one hundred thirty-three".