1200100012211 has 4 divisors (see below), whose sum is σ = 1225634055072. Its totient is φ = 1174565969352.

The previous prime is 1200100012169. The next prime is 1200100012219. The reversal of 1200100012211 is 1122100010021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200100012211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200100012192 and 1200100012201.

It is not an unprimeable number, because it can be changed into a prime (1200100012219) 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, 12767021360 + ... + 12767021453.

It is an arithmetic number, because the mean of its divisors is an integer number (306408513768).

Almost surely, 2^{1200100012211} is an apocalyptic number.

1200100012211 is a deficient number, since it is larger than the sum of its proper divisors (25534042861).

1200100012211 is an equidigital number, since it uses as much as digits as its factorization.

1200100012211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25534042860.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1200100012211 its reverse (1122100010021), we get a palindrome (2322200022232).

The spelling of 1200100012211 in words is "one trillion, two hundred billion, one hundred million, twelve thousand, two hundred eleven".