21110130113 has 4 divisors (see below), whose sum is σ = 21111189168. Its totient is φ = 21109071060.

The previous prime is 21110130077. The next prime is 21110130121. The reversal of 21110130113 is 31103101112.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21110130113 - 2⁶ = 21110130049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21110130193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499043 + ... + 539688.

It is an arithmetic number, because the mean of its divisors is an integer number (5277797292).

Almost surely, 2^21110130113 is an apocalyptic number.

It is an amenable number.

21110130113 is a deficient number, since it is larger than the sum of its proper divisors (1059055).

21110130113 is a wasteful number, since it uses less digits than its factorization.

21110130113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059054.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 21110130113 its reverse (31103101112), we get a palindrome (52213231225).

The spelling of 21110130113 in words is "twenty-one billion, one hundred ten million, one hundred thirty thousand, one hundred thirteen".