1122542215111 has 4 divisors (see below), whose sum is σ = 1124977231224. Its totient is φ = 1120107199000.

The previous prime is 1122542214977. The next prime is 1122542215117. The reversal of 1122542215111 is 1115122452211.

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 1122542215111 - 2³⁵ = 1088182476743 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 1122542215111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122542215117) 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, 1217507365 + ... + 1217508286.

It is an arithmetic number, because the mean of its divisors is an integer number (281244307806).

Almost surely, 2^{1122542215111} is an apocalyptic number.

1122542215111 is a deficient number, since it is larger than the sum of its proper divisors (2435016113).

1122542215111 is an equidigital number, since it uses as much as digits as its factorization.

1122542215111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435016112.

The product of its digits is 1600, while the sum is 28.

Adding to 1122542215111 its reverse (1115122452211), we get a palindrome (2237664667322).

The spelling of 1122542215111 in words is "one trillion, one hundred twenty-two billion, five hundred forty-two million, two hundred fifteen thousand, one hundred eleven".