21113125222 has 16 divisors (see below), whose sum is σ = 37172144160. Its totient is φ = 8803928448.

The previous prime is 21113125213. The next prime is 21113125277. The reversal of 21113125222 is 22252131112.

21113125222 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 21113125193 and 21113125202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20378947 + ... + 20379982.

It is an arithmetic number, because the mean of its divisors is an integer number (2323259010).

Almost surely, 2^21113125222 is an apocalyptic number.

21113125222 is a deficient number, since it is larger than the sum of its proper divisors (16059018938).

21113125222 is a wasteful number, since it uses less digits than its factorization.

21113125222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40758975.

The product of its digits is 480, while the sum is 22.

Adding to 21113125222 its reverse (22252131112), we get a palindrome (43365256334).

The spelling of 21113125222 in words is "twenty-one billion, one hundred thirteen million, one hundred twenty-five thousand, two hundred twenty-two".