122115611 has 4 divisors (see below), whose sum is σ = 122262000. Its totient is φ = 121969224.

The previous prime is 122115599. The next prime is 122115613. The reversal of 122115611 is 116511221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 116511221 = 1669 ⋅69809.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122115611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122115613) 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, 71936 + ... + 73613.

It is an arithmetic number, because the mean of its divisors is an integer number (30565500).

Almost surely, 2^122115611 is an apocalyptic number.

122115611 is a deficient number, since it is larger than the sum of its proper divisors (146389).

122115611 is an equidigital number, since it uses as much as digits as its factorization.

122115611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146388.

The product of its digits is 120, while the sum is 20.

The square root of 122115611 is about 11050.5932419938. The cubic root of 122115611 is about 496.1241816948.

Adding to 122115611 its reverse (116511221), we get a palindrome (238626832).

The spelling of 122115611 in words is "one hundred twenty-two million, one hundred fifteen thousand, six hundred eleven".