121502121 has 8 divisors (see below), whose sum is σ = 174464640. Its totient is φ = 74770512.

The previous prime is 121502041. The next prime is 121502137. The reversal of 121502121 is 121205121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121502121 - 2⁹ = 121501609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121502121.

It is not an unprimeable number, because it can be changed into a prime (121502221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1557681 + ... + 1557758.

It is an arithmetic number, because the mean of its divisors is an integer number (21808080).

Almost surely, 2^121502121 is an apocalyptic number.

It is an amenable number.

121502121 is a deficient number, since it is larger than the sum of its proper divisors (52962519).

121502121 is a wasteful number, since it uses less digits than its factorization.

121502121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3115455.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 121502121 is about 11022.8000526182. The cubic root of 121502121 is about 495.2919693700.

Adding to 121502121 its reverse (121205121), we get a palindrome (242707242).

The spelling of 121502121 in words is "one hundred twenty-one million, five hundred two thousand, one hundred twenty-one".