21134410051 has 2 divisors, whose sum is σ = 21134410052. Its totient is φ = 21134410050.

The previous prime is 21134409943. The next prime is 21134410061. The reversal of 21134410051 is 15001443112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21134410051 - 2⁹ = 21134409539 is a prime.

It is not a weakly prime, because it can be changed into another prime (21134410061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10567205025 + 10567205026.

It is an arithmetic number, because the mean of its divisors is an integer number (10567205026).

Almost surely, 2^21134410051 is an apocalyptic number.

21134410051 is a deficient number, since it is larger than the sum of its proper divisors (1).

21134410051 is an equidigital number, since it uses as much as digits as its factorization.

21134410051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 21134410051 its reverse (15001443112), we get a palindrome (36135853163).

The spelling of 21134410051 in words is "twenty-one billion, one hundred thirty-four million, four hundred ten thousand, fifty-one".