122111345 has 4 divisors (see below), whose sum is σ = 146533620. Its totient is φ = 97689072.

The previous prime is 122111333. The next prime is 122111369. The reversal of 122111345 is 543111221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 543111221 = 167 ⋅3252163.

It can be written as a sum of positive squares in 2 ways, for example, as 78127921 + 43983424 = 8839^2 + 6632^2 .

It is a cyclic number.

It is not a de Polignac number, because 122111345 - 2⁴ = 122111329 is a prime.

It is a super-2 number, since 2×122111345² = 29822361155418050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12211130 + ... + 12211139.

It is an arithmetic number, because the mean of its divisors is an integer number (36633405).

Almost surely, 2^122111345 is an apocalyptic number.

It is an amenable number.

122111345 is a deficient number, since it is larger than the sum of its proper divisors (24422275).

122111345 is an equidigital number, since it uses as much as digits as its factorization.

122111345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24422274.

The product of its digits is 240, while the sum is 20.

The square root of 122111345 is about 11050.4002189966. The cubic root of 122111345 is about 496.1184044089.

Adding to 122111345 its reverse (543111221), we get a palindrome (665222566).

The spelling of 122111345 in words is "one hundred twenty-two million, one hundred eleven thousand, three hundred forty-five".