121412215 has 16 divisors (see below), whose sum is σ = 154526400. Its totient is φ = 91261440.

The previous prime is 121412209. The next prime is 121412219. The reversal of 121412215 is 512214121.

It is not a de Polignac number, because 121412215 - 2²³ = 113023607 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121412192 and 121412201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121412219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86086 + ... + 87484.

It is an arithmetic number, because the mean of its divisors is an integer number (9657900).

Almost surely, 2^121412215 is an apocalyptic number.

121412215 is a deficient number, since it is larger than the sum of its proper divisors (33114185).

121412215 is a wasteful number, since it uses less digits than its factorization.

121412215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442.

The product of its digits is 160, while the sum is 19.

The square root of 121412215 is about 11018.7211145396. The cubic root of 121412215 is about 495.1697747743.

Adding to 121412215 its reverse (512214121), we get a palindrome (633626336).

The spelling of 121412215 in words is "one hundred twenty-one million, four hundred twelve thousand, two hundred fifteen".