21430140113 has 2 divisors, whose sum is σ = 21430140114. Its totient is φ = 21430140112.

The previous prime is 21430140103. The next prime is 21430140119. The reversal of 21430140113 is 31104103412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15543107584 + 5887032529 = 124672^2 + 76727^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21430140113 is a prime.

It is not a weakly prime, because it can be changed into another prime (21430140119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10715070056 + 10715070057.

It is an arithmetic number, because the mean of its divisors is an integer number (10715070057).

Almost surely, 2^21430140113 is an apocalyptic number.

It is an amenable number.

21430140113 is a deficient number, since it is larger than the sum of its proper divisors (1).

21430140113 is an equidigital number, since it uses as much as digits as its factorization.

21430140113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21430140113 its reverse (31104103412), we get a palindrome (52534243525).

The spelling of 21430140113 in words is "twenty-one billion, four hundred thirty million, one hundred forty thousand, one hundred thirteen".