21011033023323 has 32 divisors (see below), whose sum is σ = 34688529824256. Its totient is φ = 11037259473408.

The previous prime is 21011033023313. The next prime is 21011033023363. The reversal of 21011033023323 is 32332033011012.

It is not a de Polignac number, because 21011033023323 - 2⁵ = 21011033023291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21011033023293 and 21011033023302.

It is not an unprimeable number, because it can be changed into a prime (21011033023313) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 684338536 + ... + 684369237.

It is an arithmetic number, because the mean of its divisors is an integer number (1084016557008).

Almost surely, 2^{21011033023323} is an apocalyptic number.

21011033023323 is a deficient number, since it is larger than the sum of its proper divisors (13677496800933).

21011033023323 is a wasteful number, since it uses less digits than its factorization.

21011033023323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368707843.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21011033023323 its reverse (32332033011012), we get a palindrome (53343066034335).

The spelling of 21011033023323 in words is "twenty-one trillion, eleven billion, thirty-three million, twenty-three thousand, three hundred twenty-three".