20212122209599 has 2 divisors, whose sum is σ = 20212122209600. Its totient is φ = 20212122209598.

The previous prime is 20212122209597. The next prime is 20212122209647. The reversal of 20212122209599 is 99590222121202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20212122209599 - 2¹ = 20212122209597 is a prime.

Together with 20212122209597, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212122209597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106061104799 + 10106061104800.

It is an arithmetic number, because the mean of its divisors is an integer number (10106061104800).

Almost surely, 2^{20212122209599} is an apocalyptic number.

20212122209599 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212122209599 is an equidigital number, since it uses as much as digits as its factorization.

20212122209599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 20212122209599 in words is "twenty trillion, two hundred twelve billion, one hundred twenty-two million, two hundred nine thousand, five hundred ninety-nine".