21023123541082 has 32 divisors (see below), whose sum is σ = 36052979256000. Its totient is φ = 9108120930048.

The previous prime is 21023123541071. The next prime is 21023123541149. The reversal of 21023123541082 is 28014532132012.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62581332 + ... + 62916367.

It is an arithmetic number, because the mean of its divisors is an integer number (1126655601750).

Almost surely, 2^{21023123541082} is an apocalyptic number.

21023123541082 is a deficient number, since it is larger than the sum of its proper divisors (15029855714918).

21023123541082 is a wasteful number, since it uses less digits than its factorization.

21023123541082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125498110.

The product of its (nonzero) digits is 23040, while the sum is 34.

Adding to 21023123541082 its reverse (28014532132012), we get a palindrome (49037655673094).

The spelling of 21023123541082 in words is "twenty-one trillion, twenty-three billion, one hundred twenty-three million, five hundred forty-one thousand, eighty-two".