121522985 has 16 divisors (see below), whose sum is σ = 150674256. Its totient is φ = 94019328.

The previous prime is 121522981. The next prime is 121522997. The reversal of 121522985 is 589225121.

It can be written as a sum of positive squares in 8 ways, for example, as 456976 + 121066009 = 676^2 + 11003^2 .

It is a cyclic number.

It is not a de Polignac number, because 121522985 - 2² = 121522981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121522981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30107 + ... + 33903.

It is an arithmetic number, because the mean of its divisors is an integer number (9417141).

Almost surely, 2^121522985 is an apocalyptic number.

It is an amenable number.

121522985 is a deficient number, since it is larger than the sum of its proper divisors (29151271).

121522985 is a wasteful number, since it uses less digits than its factorization.

121522985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4012.

The product of its digits is 14400, while the sum is 35.

The square root of 121522985 is about 11023.7464139919. The cubic root of 121522985 is about 495.3203177920.

The spelling of 121522985 in words is "one hundred twenty-one million, five hundred twenty-two thousand, nine hundred eighty-five".