121207115 has 8 divisors (see below), whose sum is σ = 145575360. Its totient is φ = 96881152.

The previous prime is 121207109. The next prime is 121207129. The reversal of 121207115 is 511702121.

It is a happy number.

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 121207115 - 2⁸ = 121206859 is a prime.

It is a super-4 number, since 4×121207115⁴ (a number of 33 digits) contains 4444 as substring.

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, 3875 + ... + 16044.

It is an arithmetic number, because the mean of its divisors is an integer number (18196920).

Almost surely, 2^121207115 is an apocalyptic number.

121207115 is a deficient number, since it is larger than the sum of its proper divisors (24368245).

121207115 is a wasteful number, since it uses less digits than its factorization.

121207115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21141.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 121207115 is about 11009.4102930175. The cubic root of 121207115 is about 494.8907897696.

Adding to 121207115 its reverse (511702121), we get a palindrome (632909236).

The spelling of 121207115 in words is "one hundred twenty-one million, two hundred seven thousand, one hundred fifteen".