21113122 has 8 divisors (see below), whose sum is σ = 31879872. Its totient is φ = 10486500.

The previous prime is 21113119. The next prime is 21113153. The reversal of 21113122 is 22131112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34654 + ... + 35257.

It is an arithmetic number, because the mean of its divisors is an integer number (3984984).

Almost surely, 2^21113122 is an apocalyptic number.

21113122 is a deficient number, since it is larger than the sum of its proper divisors (10766750).

21113122 is a wasteful number, since it uses less digits than its factorization.

21113122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70064.

The product of its digits is 24, while the sum is 13.

The square root of 21113122 is about 4594.9017399722. The cubic root of 21113122 is about 276.3869196982.

Adding to 21113122 its reverse (22131112), we get a palindrome (43244234).

The spelling of 21113122 in words is "twenty-one million, one hundred thirteen thousand, one hundred twenty-two".