121002241 has 16 divisors (see below), whose sum is σ = 133430400. Its totient is φ = 109219968.

The previous prime is 121002199. The next prime is 121002251. The reversal of 121002241 is 142200121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121002241 - 2⁷ = 121002113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121002251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178395 + ... + 179071.

It is an arithmetic number, because the mean of its divisors is an integer number (8339400).

Almost surely, 2^121002241 is an apocalyptic number.

It is an amenable number.

121002241 is a deficient number, since it is larger than the sum of its proper divisors (12428159).

121002241 is a wasteful number, since it uses less digits than its factorization.

121002241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 121002241 is about 11000.1018631647. The cubic root of 121002241 is about 494.6117977997.

Adding to 121002241 its reverse (142200121), we get a palindrome (263202362).

It can be divided in two parts, 12100 and 2241, that added together give a palindrome (14341).

The spelling of 121002241 in words is "one hundred twenty-one million, two thousand, two hundred forty-one".