121650180 has 24 divisors (see below), whose sum is σ = 340620672. Its totient is φ = 32440032.

The previous prime is 121650173. The next prime is 121650187. The reversal of 121650180 is 81056121.

It is an interprime number because it is at equal distance from previous prime (121650173) and next prime (121650187).

It is a self number, because there is not a number n which added to its sum of digits gives 121650180.

It is not an unprimeable number, because it can be changed into a prime (121650187) 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, 1013692 + ... + 1013811.

It is an arithmetic number, because the mean of its divisors is an integer number (14192528).

Almost surely, 2^121650180 is an apocalyptic number.

121650180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121650180 is an abundant number, since it is smaller than the sum of its proper divisors (218970492).

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

121650180 is a wasteful number, since it uses less digits than its factorization.

121650180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027515 (or 2027513 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 121650180 is about 11029.5140418787. The cubic root of 121650180 is about 495.4930705697.

The spelling of 121650180 in words is "one hundred twenty-one million, six hundred fifty thousand, one hundred eighty".