21140604127 has 2 divisors, whose sum is σ = 21140604128. Its totient is φ = 21140604126.

The previous prime is 21140604097. The next prime is 21140604139. The reversal of 21140604127 is 72140604112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21140604127 - 2⁷ = 21140603999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21140604095 and 21140604104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21140604157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10570302063 + 10570302064.

It is an arithmetic number, because the mean of its divisors is an integer number (10570302064).

Almost surely, 2^21140604127 is an apocalyptic number.

21140604127 is a deficient number, since it is larger than the sum of its proper divisors (1).

21140604127 is an equidigital number, since it uses as much as digits as its factorization.

21140604127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 28.

The spelling of 21140604127 in words is "twenty-one billion, one hundred forty million, six hundred four thousand, one hundred twenty-seven".