212004411991 has 2 divisors, whose sum is σ = 212004411992. Its totient is φ = 212004411990.

The previous prime is 212004411979. The next prime is 212004412019. The reversal of 212004411991 is 199114400212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212004411991 - 2¹³ = 212004403799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212004411901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106002205995 + 106002205996.

It is an arithmetic number, because the mean of its divisors is an integer number (106002205996).

Almost surely, 2^212004411991 is an apocalyptic number.

212004411991 is a deficient number, since it is larger than the sum of its proper divisors (1).

212004411991 is an equidigital number, since it uses as much as digits as its factorization.

212004411991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 34.

The spelling of 212004411991 in words is "two hundred twelve billion, four million, four hundred eleven thousand, nine hundred ninety-one".