20212329791 has 2 divisors, whose sum is σ = 20212329792. Its totient is φ = 20212329790.

The previous prime is 20212329779. The next prime is 20212329793. The reversal of 20212329791 is 19792321202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20212329791 - 2²² = 20208135487 is a prime.

It is a super-2 number, since 2×20212329791² (a number of 21 digits) contains 22 as substring.

Together with 20212329793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212329793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106164895 + 10106164896.

It is an arithmetic number, because the mean of its divisors is an integer number (10106164896).

Almost surely, 2^20212329791 is an apocalyptic number.

20212329791 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212329791 is an equidigital number, since it uses as much as digits as its factorization.

20212329791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The spelling of 20212329791 in words is "twenty billion, two hundred twelve million, three hundred twenty-nine thousand, seven hundred ninety-one".