12211211019999 has 4 divisors (see below), whose sum is σ = 16281614693336. Its totient is φ = 8140807346664.

The previous prime is 12211211019989. The next prime is 12211211020033. The reversal of 12211211019999 is 99991011211221.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12211211019999 - 2¹⁹ = 12211210495711 is a prime.

It is a super-2 number, since 2×12211211019999² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12211211019989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2035201836664 + ... + 2035201836669.

It is an arithmetic number, because the mean of its divisors is an integer number (4070403673334).

Almost surely, 2^{12211211019999} is an apocalyptic number.

12211211019999 is a deficient number, since it is larger than the sum of its proper divisors (4070403673337).

12211211019999 is an equidigital number, since it uses as much as digits as its factorization.

12211211019999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4070403673336.

The product of its (nonzero) digits is 52488, while the sum is 48.

The spelling of 12211211019999 in words is "twelve trillion, two hundred eleven billion, two hundred eleven million, nineteen thousand, nine hundred ninety-nine".