12001102211 has 4 divisors (see below), whose sum is σ = 13715545392.
Its totient is φ = 10286659032.
The previous prime is 12001102193. The next prime is 12001102271. The reversal of 12001102211 is 11220110021.
Adding to 12001102211 its reverse (11220110021), we get a palindrome (23221212232).
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 12001102211 - 210 = 12001101187 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 12001102192 and 12001102201.
It is not an unprimeable number, because it can be changed into a prime (12001102271) 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, 857221580 + ... + 857221593.
It is an arithmetic number, because the mean of its divisors is an integer number (3428886348).
Almost surely, 212001102211 is an apocalyptic number.
12001102211 is a deficient number, since it is larger than the sum of its proper divisors (1714443181).
12001102211 is an equidigital number, since it uses as much as digits as its factorization.
12001102211 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1714443180.
The product of its (nonzero) digits is 8, while the sum is 11.
The spelling of 12001102211 in words is "twelve billion, one million, one hundred two thousand, two hundred eleven".