121120999966 has 16 divisors (see below), whose sum is σ = 183201491088. Its totient is φ = 60054508800.

The previous prime is 121120999939. The next prime is 121120999969. The reversal of 121120999966 is 669999021121.

121120999966 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120999969) 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, 194446 + ... + 529198.

It is an arithmetic number, because the mean of its divisors is an integer number (11450093193).

Almost surely, 2^121120999966 is an apocalyptic number.

121120999966 is a deficient number, since it is larger than the sum of its proper divisors (62080491122).

121120999966 is a wasteful number, since it uses less digits than its factorization.

121120999966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336267.

The product of its (nonzero) digits is 944784, while the sum is 55.

The spelling of 121120999966 in words is "one hundred twenty-one billion, one hundred twenty million, nine hundred ninety-nine thousand, nine hundred sixty-six".