21142140113 has 2 divisors, whose sum is σ = 21142140114. Its totient is φ = 21142140112.

The previous prime is 21142140013. The next prime is 21142140119. The reversal of 21142140113 is 31104124112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20658887824 + 483252289 = 143732^2 + 21983^2 .

It is a cyclic number.

It is not a de Polignac number, because 21142140113 - 2²⁰ = 21141091537 is a prime.

It is not a weakly prime, because it can be changed into another prime (21142140119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10571070056 + 10571070057.

It is an arithmetic number, because the mean of its divisors is an integer number (10571070057).

Almost surely, 2^21142140113 is an apocalyptic number.

It is an amenable number.

21142140113 is a deficient number, since it is larger than the sum of its proper divisors (1).

21142140113 is an equidigital number, since it uses as much as digits as its factorization.

21142140113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21142140113 its reverse (31104124112), we get a palindrome (52246264225).

The spelling of 21142140113 in words is "twenty-one billion, one hundred forty-two million, one hundred forty thousand, one hundred thirteen".