21113137482 has 32 divisors (see below), whose sum is σ = 42315654528. Its totient is φ = 7022835456.

The previous prime is 21113137447. The next prime is 21113137483. The reversal of 21113137482 is 28473131112.

It is not an unprimeable number, because it can be changed into a prime (21113137483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8821678 + ... + 8824070.

It is an arithmetic number, because the mean of its divisors is an integer number (1322364204).

Almost surely, 2^21113137482 is an apocalyptic number.

21113137482 is an abundant number, since it is smaller than the sum of its proper divisors (21202517046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21113137482 is a wasteful number, since it uses less digits than its factorization.

21113137482 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4894.

The product of its digits is 8064, while the sum is 33.

Adding to 21113137482 its reverse (28473131112), we get a palindrome (49586268594).

The spelling of 21113137482 in words is "twenty-one billion, one hundred thirteen million, one hundred thirty-seven thousand, four hundred eighty-two".