20212212001999 has 2 divisors, whose sum is σ = 20212212002000. Its totient is φ = 20212212001998.

The previous prime is 20212212001987. The next prime is 20212212002029. The reversal of 20212212001999 is 99910021221202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20212212001999 - 2⁵ = 20212212001967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212212901999) 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, 10106106000999 + 10106106001000.

It is an arithmetic number, because the mean of its divisors is an integer number (10106106001000).

Almost surely, 2^{20212212001999} is an apocalyptic number.

20212212001999 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212212001999 is an equidigital number, since it uses as much as digits as its factorization.

20212212001999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 40.

The spelling of 20212212001999 in words is "twenty trillion, two hundred twelve billion, two hundred twelve million, one thousand, nine hundred ninety-nine".