1211103102211 has 16 divisors (see below), whose sum is σ = 1220467868928. Its totient is φ = 1201781340000.

The previous prime is 1211103102169. The next prime is 1211103102227. The reversal of 1211103102211 is 1122013011121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1211103102211 - 2²³ = 1211094713603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211103102611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96519040 + ... + 96531586.

It is an arithmetic number, because the mean of its divisors is an integer number (76279241808).

Almost surely, 2^{1211103102211} is an apocalyptic number.

1211103102211 is a deficient number, since it is larger than the sum of its proper divisors (9364766717).

1211103102211 is a wasteful number, since it uses less digits than its factorization.

1211103102211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14202.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1211103102211 its reverse (1122013011121), we get a palindrome (2333116113332).

The spelling of 1211103102211 in words is "one trillion, two hundred eleven billion, one hundred three million, one hundred two thousand, two hundred eleven".