11221203012111 has 12 divisors (see below), whose sum is σ = 16208463569688. Its totient is φ = 7480774676304.

The previous prime is 11221203012091. The next prime is 11221203012119. The reversal of 11221203012111 is 11121030212211.

It is a happy number.

11221203012111 is a `hidden beast` number, since 11 + 22 + 120 + 301 + 211 + 1 = 666.

It is not a de Polignac number, because 11221203012111 - 2¹⁰ = 11221203011087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221203012119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 500941 + ... + 4763753.

It is an arithmetic number, because the mean of its divisors is an integer number (1350705297474).

Almost surely, 2^{11221203012111} is an apocalyptic number.

11221203012111 is a deficient number, since it is larger than the sum of its proper divisors (4987260557577).

11221203012111 is a wasteful number, since it uses less digits than its factorization.

11221203012111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4555302 (or 4555299 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 11221203012111 its reverse (11121030212211), we get a palindrome (22342233224322).

The spelling of 11221203012111 in words is "eleven trillion, two hundred twenty-one billion, two hundred three million, twelve thousand, one hundred eleven".