21141123071 has 2 divisors, whose sum is σ = 21141123072. Its totient is φ = 21141123070.

The previous prime is 21141123037. The next prime is 21141123097. The reversal of 21141123071 is 17032114112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21141123071 - 2¹⁰ = 21141122047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21141123271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10570561535 + 10570561536.

It is an arithmetic number, because the mean of its divisors is an integer number (10570561536).

Almost surely, 2^21141123071 is an apocalyptic number.

21141123071 is a deficient number, since it is larger than the sum of its proper divisors (1).

21141123071 is an equidigital number, since it uses as much as digits as its factorization.

21141123071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

Adding to 21141123071 its reverse (17032114112), we get a palindrome (38173237183).

The spelling of 21141123071 in words is "twenty-one billion, one hundred forty-one million, one hundred twenty-three thousand, seventy-one".