121222200985 has 16 divisors (see below), whose sum is σ = 154235442816. Its totient is φ = 91147592448.

The previous prime is 121222200943. The next prime is 121222200989. The reversal of 121222200985 is 589002222121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121222200985 - 2⁷ = 121222200857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121222200985.

It is not an unprimeable number, because it can be changed into a prime (121222200989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 919047 + ... + 1042636.

It is an arithmetic number, because the mean of its divisors is an integer number (9639715176).

Almost surely, 2^121222200985 is an apocalyptic number.

It is an amenable number.

121222200985 is a deficient number, since it is larger than the sum of its proper divisors (33013241831).

121222200985 is a wasteful number, since it uses less digits than its factorization.

121222200985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962432.

The product of its (nonzero) digits is 11520, while the sum is 34.

The spelling of 121222200985 in words is "one hundred twenty-one billion, two hundred twenty-two million, two hundred thousand, nine hundred eighty-five".