121283680 has 48 divisors (see below), whose sum is σ = 327468960. Its totient is φ = 41582592.

The previous prime is 121283671. The next prime is 121283681. The reversal of 121283680 is 86382121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121283681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53025 + ... + 55264.

It is an arithmetic number, because the mean of its divisors is an integer number (6822270).

Almost surely, 2^121283680 is an apocalyptic number.

121283680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121283680 is an abundant number, since it is smaller than the sum of its proper divisors (206185280).

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

121283680 is a wasteful number, since it uses less digits than its factorization.

121283680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108311 (or 108303 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 121283680 is about 11012.8869966054. The cubic root of 121283680 is about 494.9949732510.

The spelling of 121283680 in words is "one hundred twenty-one million, two hundred eighty-three thousand, six hundred eighty".