121807776 has 48 divisors (see below), whose sum is σ = 320864544. Its totient is φ = 40460544.

The previous prime is 121807769. The next prime is 121807787. The reversal of 121807776 is 677708121.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27406 + ... + 31538.

It is an arithmetic number, because the mean of its divisors is an integer number (6684678).

Almost surely, 2^121807776 is an apocalyptic number.

121807776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121807776 is an abundant number, since it is smaller than the sum of its proper divisors (199056768).

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

121807776 is a wasteful number, since it uses less digits than its factorization.

121807776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4453 (or 4445 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 39.

The square root of 121807776 is about 11036.6560152974. The cubic root of 121807776 is about 495.7069462080.

The spelling of 121807776 in words is "one hundred twenty-one million, eight hundred seven thousand, seven hundred seventy-six".