121866850 has 24 divisors (see below), whose sum is σ = 259054848. Its totient is φ = 41782800.

The previous prime is 121866821. The next prime is 121866853. The reversal of 121866850 is 58668121.

It is not an unprimeable number, because it can be changed into a prime (121866853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 173746 + ... + 174445.

It is an arithmetic number, because the mean of its divisors is an integer number (10793952).

Almost surely, 2^121866850 is an apocalyptic number.

121866850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121866850 is an abundant number, since it is smaller than the sum of its proper divisors (137187998).

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

121866850 is a wasteful number, since it uses less digits than its factorization.

121866850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348210 (or 348205 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 121866850 is about 11039.3319544255. The cubic root of 121866850 is about 495.7870687871.

The spelling of 121866850 in words is "one hundred twenty-one million, eight hundred sixty-six thousand, eight hundred fifty".