111311322122122 has 4 divisors (see below), whose sum is σ = 166966983183186. Its totient is φ = 55655661061060.

The previous prime is 111311322122009. The next prime is 111311322122129. The reversal of 111311322122122 is 221221223113111.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 109421244332521 + 1890077789601 = 10460461^2 + 1374801^2 .

It is not an unprimeable number, because it can be changed into a prime (111311322122129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27827830530529 + ... + 27827830530532.

Almost surely, 2^{111311322122122} is an apocalyptic number.

111311322122122 is a deficient number, since it is larger than the sum of its proper divisors (55655661061064).

111311322122122 is an equidigital number, since it uses as much as digits as its factorization.

111311322122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55655661061063.

The product of its digits is 576, while the sum is 25.

Adding to 111311322122122 its reverse (221221223113111), we get a palindrome (332532545235233).

The spelling of 111311322122122 in words is "one hundred eleven trillion, three hundred eleven billion, three hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-two".