121284108782 has 16 divisors (see below), whose sum is σ = 186868704240. Its totient is φ = 58994990208.

The previous prime is 121284108719. The next prime is 121284108839. The reversal of 121284108782 is 287801482121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449894 + ... + 667062.

It is an arithmetic number, because the mean of its divisors is an integer number (11679294015).

Almost surely, 2^121284108782 is an apocalyptic number.

121284108782 is a deficient number, since it is larger than the sum of its proper divisors (65584595458).

121284108782 is a wasteful number, since it uses less digits than its factorization.

121284108782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224755.

The product of its (nonzero) digits is 114688, while the sum is 44.

The spelling of 121284108782 in words is "one hundred twenty-one billion, two hundred eighty-four million, one hundred eight thousand, seven hundred eighty-two".