21102013222 has 4 divisors (see below), whose sum is σ = 31653019836. Its totient is φ = 10551006610.

The previous prime is 21102013217. The next prime is 21102013237. The reversal of 21102013222 is 22231020112.

It is a happy number.

21102013222 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 21102013196 and 21102013205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5275503304 + ... + 5275503307.

It is an arithmetic number, because the mean of its divisors is an integer number (7913254959).

Almost surely, 2^21102013222 is an apocalyptic number.

21102013222 is a deficient number, since it is larger than the sum of its proper divisors (10551006614).

21102013222 is a wasteful number, since it uses less digits than its factorization.

21102013222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10551006613.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21102013222 its reverse (22231020112), we get a palindrome (43333033334).

The spelling of 21102013222 in words is "twenty-one billion, one hundred two million, thirteen thousand, two hundred twenty-two".