1200100221211 has 2 divisors, whose sum is σ = 1200100221212. Its totient is φ = 1200100221210.

The previous prime is 1200100221179. The next prime is 1200100221217. The reversal of 1200100221211 is 1121220010021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1200100221211 - 2⁵ = 1200100221179 is a prime.

It is a super-2 number, since 2×1200100221211² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1200100221191 and 1200100221200.

It is not a weakly prime, because it can be changed into another prime (1200100221217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600050110605 + 600050110606.

It is an arithmetic number, because the mean of its divisors is an integer number (600050110606).

Almost surely, 2^{1200100221211} is an apocalyptic number.

1200100221211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200100221211 is an equidigital number, since it uses as much as digits as its factorization.

1200100221211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1200100221211 its reverse (1121220010021), we get a palindrome (2321320231232).

The spelling of 1200100221211 in words is "one trillion, two hundred billion, one hundred million, two hundred twenty-one thousand, two hundred eleven".