1211012219999 has 2 divisors, whose sum is σ = 1211012220000. Its totient is φ = 1211012219998.

The previous prime is 1211012219909. The next prime is 1211012220023. The reversal of 1211012219999 is 9999122101121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211012219999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211012219909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605506109999 + 605506110000.

It is an arithmetic number, because the mean of its divisors is an integer number (605506110000).

Almost surely, 2^{1211012219999} is an apocalyptic number.

1211012219999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211012219999 is an equidigital number, since it uses as much as digits as its factorization.

1211012219999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 47.

The spelling of 1211012219999 in words is "one trillion, two hundred eleven billion, twelve million, two hundred nineteen thousand, nine hundred ninety-nine".