122113121 has 4 divisors (see below), whose sum is σ = 131506452. Its totient is φ = 112719792.

The previous prime is 122113109. The next prime is 122113139. The reversal of 122113121 is 121311221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121311221 = 197 ⋅615793.

It can be written as a sum of positive squares in 2 ways, for example, as 44408896 + 77704225 = 6664^2 + 8815^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122113121 is a prime.

It is a super-2 number, since 2×122113121² = 29823228640721282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122113096 and 122113105.

It is not an unprimeable number, because it can be changed into a prime (122113721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4696646 + ... + 4696671.

It is an arithmetic number, because the mean of its divisors is an integer number (32876613).

Almost surely, 2^122113121 is an apocalyptic number.

It is an amenable number.

122113121 is a deficient number, since it is larger than the sum of its proper divisors (9393331).

122113121 is an equidigital number, since it uses as much as digits as its factorization.

122113121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9393330.

The product of its digits is 24, while the sum is 14.

The square root of 122113121 is about 11050.4805777848. The cubic root of 122113121 is about 496.1208095963.

Adding to 122113121 its reverse (121311221), we get a palindrome (243424342).

The spelling of 122113121 in words is "one hundred twenty-two million, one hundred thirteen thousand, one hundred twenty-one".