1111221110211 has 4 divisors (see below), whose sum is σ = 1481628146952. Its totient is φ = 740814073472.

The previous prime is 1111221110161. The next prime is 1111221110231. The reversal of 1111221110211 is 1120111221111.

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 1111221110211 - 2⁶ = 1111221110147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111221110231) 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, 185203518366 + ... + 185203518371.

It is an arithmetic number, because the mean of its divisors is an integer number (370407036738).

Almost surely, 2^{1111221110211} is an apocalyptic number.

1111221110211 is a deficient number, since it is larger than the sum of its proper divisors (370407036741).

1111221110211 is an equidigital number, since it uses as much as digits as its factorization.

1111221110211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370407036740.

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

Adding to 1111221110211 its reverse (1120111221111), we get a palindrome (2231332331322).

The spelling of 1111221110211 in words is "one trillion, one hundred eleven billion, two hundred twenty-one million, one hundred ten thousand, two hundred eleven".