121886680 has 16 divisors (see below), whose sum is σ = 274245120. Its totient is φ = 48754656.

The previous prime is 121886669. The next prime is 121886689. The reversal of 121886680 is 86688121.

It is a super-2 number, since 2×121886680² = 29712725522844800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 3047167 = 121886680 / (1 + 2 + 1 + 8 + 8 + 6 + 6 + 8 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121886689) 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, 1523544 + ... + 1523623.

It is an arithmetic number, because the mean of its divisors is an integer number (17140320).

Almost surely, 2^121886680 is an apocalyptic number.

121886680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121886680 is an abundant number, since it is smaller than the sum of its proper divisors (152358440).

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

121886680 is a wasteful number, since it uses less digits than its factorization.

121886680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3047178 (or 3047174 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 121886680 is about 11040.2300700665. The cubic root of 121886680 is about 495.8139585835.

The spelling of 121886680 in words is "one hundred twenty-one million, eight hundred eighty-six thousand, six hundred eighty".