1111122011211 has 4 divisors (see below), whose sum is σ = 1481496014952. Its totient is φ = 740748007472.

The previous prime is 1111122011183. The next prime is 1111122011267. The reversal of 1111122011211 is 1121102211111.

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

It is a cyclic number.

It is not a de Polignac number, because 1111122011211 - 2⁶ = 1111122011147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111122011611) 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, 185187001866 + ... + 185187001871.

It is an arithmetic number, because the mean of its divisors is an integer number (370374003738).

Almost surely, 2^{1111122011211} is an apocalyptic number.

1111122011211 is a deficient number, since it is larger than the sum of its proper divisors (370374003741).

1111122011211 is an equidigital number, since it uses as much as digits as its factorization.

1111122011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370374003740.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 1111122011211 its reverse (1121102211111), we get a palindrome (2232224222322).

The spelling of 1111122011211 in words is "one trillion, one hundred eleven billion, one hundred twenty-two million, eleven thousand, two hundred eleven".