121305108 has 72 divisors (see below), whose sum is σ = 298726176. Its totient is φ = 38301120.

The previous prime is 121305103. The next prime is 121305113. The reversal of 121305108 is 801503121.

It is an interprime number because it is at equal distance from previous prime (121305103) and next prime (121305113).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121305103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 772566 + ... + 772722.

Almost surely, 2^121305108 is an apocalyptic number.

It is an amenable number.

121305108 is an abundant number, since it is smaller than the sum of its proper divisors (177421068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121305108 is a wasteful number, since it uses less digits than its factorization.

121305108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 121305108 is about 11013.8598138890. The cubic root of 121305108 is about 495.0241228934.

Adding to 121305108 its reverse (801503121), we get a palindrome (922808229).

The spelling of 121305108 in words is "one hundred twenty-one million, three hundred five thousand, one hundred eight".