121221141 has 8 divisors (see below), whose sum is σ = 161689440. Its totient is φ = 80783472.

The previous prime is 121221103. The next prime is 121221167. The reversal of 121221141 is 141122121.

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

It is not a de Polignac number, because 121221141 - 2⁶ = 121221077 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121221141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121221181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4206 + ... + 16128.

It is an arithmetic number, because the mean of its divisors is an integer number (20211180).

Almost surely, 2^121221141 is an apocalyptic number.

It is an amenable number.

121221141 is a deficient number, since it is larger than the sum of its proper divisors (40468299).

121221141 is a wasteful number, since it uses less digits than its factorization.

121221141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15315.

The product of its digits is 32, while the sum is 15.

The square root of 121221141 is about 11010.0472751029. The cubic root of 121221141 is about 494.9098785018.

Adding to 121221141 its reverse (141122121), we get a palindrome (262343262).

The spelling of 121221141 in words is "one hundred twenty-one million, two hundred twenty-one thousand, one hundred forty-one".