122121118 has 16 divisors (see below), whose sum is σ = 214220160. Its totient is φ = 51120216.

The previous prime is 122121107. The next prime is 122121119. The reversal of 122121118 is 811121221.

It is a junction number, because it is equal to n+sod(n) for n = 122121095 and 122121104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122121119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100828 + ... + 102031.

It is an arithmetic number, because the mean of its divisors is an integer number (13388760).

Almost surely, 2^122121118 is an apocalyptic number.

122121118 is a deficient number, since it is larger than the sum of its proper divisors (92099042).

122121118 is a wasteful number, since it uses less digits than its factorization.

122121118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202911.

The product of its digits is 64, while the sum is 19.

The square root of 122121118 is about 11050.8424113277. The cubic root of 122121118 is about 496.1316394222.

Adding to 122121118 its reverse (811121221), we get a palindrome (933242339).

The spelling of 122121118 in words is "one hundred twenty-two million, one hundred twenty-one thousand, one hundred eighteen".