21334052371 has 2 divisors, whose sum is σ = 21334052372. Its totient is φ = 21334052370.

The previous prime is 21334052351. The next prime is 21334052401. The reversal of 21334052371 is 17325043312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21334052371 is a prime.

It is not a weakly prime, because it can be changed into another prime (21334052351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10667026185 + 10667026186.

It is an arithmetic number, because the mean of its divisors is an integer number (10667026186).

Almost surely, 2^21334052371 is an apocalyptic number.

21334052371 is a deficient number, since it is larger than the sum of its proper divisors (1).

21334052371 is an equidigital number, since it uses as much as digits as its factorization.

21334052371 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 31.

Adding to 21334052371 its reverse (17325043312), we get a palindrome (38659095683).

It can be divided in two parts, 2133 and 4052371, that added together give a palindrome (4054504).

The spelling of 21334052371 in words is "twenty-one billion, three hundred thirty-four million, fifty-two thousand, three hundred seventy-one".