21123232001331 has 8 divisors (see below), whose sum is σ = 28321651846080. Its totient is φ = 14003483412072.

The previous prime is 21123232001191. The next prime is 21123232001407. The reversal of 21123232001331 is 13310023232112.

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

It is not a de Polignac number, because 21123232001331 - 2¹⁰ = 21123232000307 is a prime.

It is a super-2 number, since 2×21123232001331² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21123232501331) 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, 19667813245 + ... + 19667814318.

It is an arithmetic number, because the mean of its divisors is an integer number (3540206480760).

Almost surely, 2^{21123232001331} is an apocalyptic number.

21123232001331 is a deficient number, since it is larger than the sum of its proper divisors (7198419844749).

21123232001331 is a wasteful number, since it uses less digits than its factorization.

21123232001331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39335627745.

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

Adding to 21123232001331 its reverse (13310023232112), we get a palindrome (34433255233443).

The spelling of 21123232001331 in words is "twenty-one trillion, one hundred twenty-three billion, two hundred thirty-two million, one thousand, three hundred thirty-one".