121106215 has 8 divisors (see below), whose sum is σ = 153876240. Its totient is φ = 91185792.

The previous prime is 121106207. The next prime is 121106231. The reversal of 121106215 is 512601121.

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 121106215 - 2³ = 121106207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121106192 and 121106201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 712305 + ... + 712474.

It is an arithmetic number, because the mean of its divisors is an integer number (19234530).

Almost surely, 2^121106215 is an apocalyptic number.

121106215 is a deficient number, since it is larger than the sum of its proper divisors (32770025).

121106215 is a wasteful number, since it uses less digits than its factorization.

121106215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1424801.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 121106215 is about 11004.8268955036. The cubic root of 121106215 is about 494.7534261524.

Adding to 121106215 its reverse (512601121), we get a palindrome (633707336).

The spelling of 121106215 in words is "one hundred twenty-one million, one hundred six thousand, two hundred fifteen".