1200100100211 has 48 divisors (see below), whose sum is σ = 1851615667200. Its totient is φ = 746822778624.

The previous prime is 1200100100189. The next prime is 1200100100293. The reversal of 1200100100211 is 1120010010021.

It is a happy number.

It is not a de Polignac number, because 1200100100211 - 2⁵ = 1200100100179 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1200100100193 and 1200100100202.

It is not an unprimeable number, because it can be changed into a prime (1200120100211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6487675 + ... + 6670091.

It is an arithmetic number, because the mean of its divisors is an integer number (38575326400).

Almost surely, 2^{1200100100211} is an apocalyptic number.

1200100100211 is a deficient number, since it is larger than the sum of its proper divisors (651515566989).

1200100100211 is a wasteful number, since it uses less digits than its factorization.

1200100100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183008 (or 183005 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1200100100211 its reverse (1120010010021), we get a palindrome (2320110110232).

The spelling of 1200100100211 in words is "one trillion, two hundred billion, one hundred million, one hundred thousand, two hundred eleven".