1200212122011 has 12 divisors (see below), whose sum is σ = 1861553495592. Its totient is φ = 685835498208.

The previous prime is 1200212121989. The next prime is 1200212122027. The reversal of 1200212122011 is 1102212120021.

It is not a de Polignac number, because 1200212122011 - 2¹⁴ = 1200212105627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1200212121011) 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 in 11 ways as a sum of consecutive naturals, for example, 4082354010 + ... + 4082354303.

It is an arithmetic number, because the mean of its divisors is an integer number (155129457966).

Almost surely, 2^{1200212122011} is an apocalyptic number.

1200212122011 is a deficient number, since it is larger than the sum of its proper divisors (661341373581).

1200212122011 is an equidigital number, since it uses as much as digits as its factorization.

1200212122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8164708330 (or 8164708323 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1200212122011 its reverse (1102212120021), we get a palindrome (2302424242032).

The spelling of 1200212122011 in words is "one trillion, two hundred billion, two hundred twelve million, one hundred twenty-two thousand, eleven".