21142313244071 has 2 divisors, whose sum is σ = 21142313244072. Its totient is φ = 21142313244070.

The previous prime is 21142313244049. The next prime is 21142313244163. The reversal of 21142313244071 is 17044231324112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21142313244071 - 2²⁶ = 21142246135207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21142313244001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10571156622035 + 10571156622036.

It is an arithmetic number, because the mean of its divisors is an integer number (10571156622036).

Almost surely, 2^{21142313244071} is an apocalyptic number.

21142313244071 is a deficient number, since it is larger than the sum of its proper divisors (1).

21142313244071 is an equidigital number, since it uses as much as digits as its factorization.

21142313244071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 35.

Adding to 21142313244071 its reverse (17044231324112), we get a palindrome (38186544568183).

The spelling of 21142313244071 in words is "twenty-one trillion, one hundred forty-two billion, three hundred thirteen million, two hundred forty-four thousand, seventy-one".