11110122221111 has 4 divisors (see below), whose sum is σ = 11110243376424. Its totient is φ = 11110001065800.

The previous prime is 11110122221089. The next prime is 11110122221123. The reversal of 11110122221111 is 11112222101111.

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 11110122221111 - 2⁶ = 11110122221047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11110122221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110122221311) 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, 60440000 + ... + 60623541.

It is an arithmetic number, because the mean of its divisors is an integer number (2777560844106).

Almost surely, 2^{11110122221111} is an apocalyptic number.

11110122221111 is a deficient number, since it is larger than the sum of its proper divisors (121155313).

11110122221111 is an equidigital number, since it uses as much as digits as its factorization.

11110122221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121155312.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 11110122221111 its reverse (11112222101111), we get a palindrome (22222344322222).

It can be divided in two parts, 11110 and 122221111, that added together give a palindrome (122232221).

The spelling of 11110122221111 in words is "eleven trillion, one hundred ten billion, one hundred twenty-two million, two hundred twenty-one thousand, one hundred eleven".