121896120 has 64 divisors (see below), whose sum is σ = 387205920. Its totient is φ = 30593024.

The previous prime is 121896119. The next prime is 121896121. The reversal of 121896120 is 21698121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121896119) and next prime (121896121).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121896121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27837 + ... + 31916.

Almost surely, 2^121896120 is an apocalyptic number.

121896120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121896120 is an abundant number, since it is smaller than the sum of its proper divisors (265309800).

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

121896120 is a wasteful number, since it uses less digits than its factorization.

121896120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59784 (or 59780 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 121896120 is about 11040.6575891113. The cubic root of 121896120 is about 495.8267583495.

The spelling of 121896120 in words is "one hundred twenty-one million, eight hundred ninety-six thousand, one hundred twenty".