121215076 has 12 divisors (see below), whose sum is σ = 213551100. Its totient is φ = 60200480.

The previous prime is 121215067. The next prime is 121215077. The reversal of 121215076 is 670512121.

It can be written as a sum of positive squares in 2 ways, for example, as 30470400 + 90744676 = 5520^2 + 9526^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121215076.

It is not an unprimeable number, because it can be changed into a prime (121215077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101095 + ... + 102286.

It is an arithmetic number, because the mean of its divisors is an integer number (17795925).

Almost surely, 2^121215076 is an apocalyptic number.

It is an amenable number.

121215076 is a deficient number, since it is larger than the sum of its proper divisors (92336024).

121215076 is a wasteful number, since it uses less digits than its factorization.

121215076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203534 (or 203532 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 121215076 is about 11009.7718414143. The cubic root of 121215076 is about 494.9016245002.

Adding to 121215076 its reverse (670512121), we get a palindrome (791727197).

The spelling of 121215076 in words is "one hundred twenty-one million, two hundred fifteen thousand, seventy-six".