121108856 has 16 divisors (see below), whose sum is σ = 247722840. Its totient is φ = 55049440.

The previous prime is 121108853. The next prime is 121108859. The reversal of 121108856 is 658801121.

It is an interprime number because it is at equal distance from previous prime (121108853) and next prime (121108859).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121108853) 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, 688031 + ... + 688206.

Almost surely, 2^121108856 is an apocalyptic number.

It is an amenable number.

121108856 is an abundant number, since it is smaller than the sum of its proper divisors (126613984).

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

121108856 is a wasteful number, since it uses less digits than its factorization.

121108856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376254 (or 1376250 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 32.

The square root of 121108856 is about 11004.9468876501. The cubic root of 121108856 is about 494.7570225390.

Adding to 121108856 its reverse (658801121), we get a palindrome (779909977).

The spelling of 121108856 in words is "one hundred twenty-one million, one hundred eight thousand, eight hundred fifty-six".