21134240113 has 16 divisors (see below), whose sum is σ = 25469424000. Its totient is φ = 17131416192.

The previous prime is 21134240027. The next prime is 21134240159. The reversal of 21134240113 is 31104243112.

It is a cyclic number.

It is not a de Polignac number, because 21134240113 - 2²⁵ = 21100685681 is a prime.

It is a super-2 number, since 2×21134240113² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21134240213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63958 + ... + 215311.

It is an arithmetic number, because the mean of its divisors is an integer number (1591839000).

Almost surely, 2^21134240113 is an apocalyptic number.

It is an amenable number.

21134240113 is a deficient number, since it is larger than the sum of its proper divisors (4335183887).

21134240113 is a wasteful number, since it uses less digits than its factorization.

21134240113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279864.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21134240113 its reverse (31104243112), we get a palindrome (52238483225).

The spelling of 21134240113 in words is "twenty-one billion, one hundred thirty-four million, two hundred forty thousand, one hundred thirteen".