121220122985 has 8 divisors (see below), whose sum is σ = 156653697480. Its totient is φ = 89516398464.

The previous prime is 121220122979. The next prime is 121220122997. The reversal of 121220122985 is 589221022121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11635289689 + 109584833296 = 107867^2 + 331036^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121220122985 - 2⁸ = 121220122729 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 932462420 + ... + 932462549.

It is an arithmetic number, because the mean of its divisors is an integer number (19581712185).

Almost surely, 2^121220122985 is an apocalyptic number.

It is an amenable number.

121220122985 is a deficient number, since it is larger than the sum of its proper divisors (35433574495).

121220122985 is a wasteful number, since it uses less digits than its factorization.

121220122985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864924987.

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 121220122985 in words is "one hundred twenty-one billion, two hundred twenty million, one hundred twenty-two thousand, nine hundred eighty-five".