21013115022 has 24 divisors (see below), whose sum is σ = 45633579264. Its totient is φ = 6988192704.

The previous prime is 21013115003. The next prime is 21013115033. The reversal of 21013115022 is 22051131012.

21013115022 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21013114986 and 21013115004.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1340238 + ... + 1355825.

It is an arithmetic number, because the mean of its divisors is an integer number (1901399136).

Almost surely, 2^21013115022 is an apocalyptic number.

21013115022 is an abundant number, since it is smaller than the sum of its proper divisors (24620464242).

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

21013115022 is a wasteful number, since it uses less digits than its factorization.

21013115022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2696504 (or 2696501 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 21013115022 its reverse (22051131012), we get a palindrome (43064246034).

The spelling of 21013115022 in words is "twenty-one billion, thirteen million, one hundred fifteen thousand, twenty-two".