121015141 has 4 divisors (see below), whose sum is σ = 130324012. Its totient is φ = 111706272.

The previous prime is 121015133. The next prime is 121015151. The reversal of 121015141 is 141510121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 83192641 + 37822500 = 9121^2 + 6150^2 .

It is a cyclic number.

It is not a de Polignac number, because 121015141 - 2³ = 121015133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121015151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4654416 + ... + 4654441.

It is an arithmetic number, because the mean of its divisors is an integer number (32581003).

Almost surely, 2^121015141 is an apocalyptic number.

It is an amenable number.

121015141 is a deficient number, since it is larger than the sum of its proper divisors (9308871).

121015141 is an equidigital number, since it uses as much as digits as its factorization.

121015141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9308870.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 121015141 is about 11000.6882057442. The cubic root of 121015141 is about 494.6293739630.

Adding to 121015141 its reverse (141510121), we get a palindrome (262525262).

The spelling of 121015141 in words is "one hundred twenty-one million, fifteen thousand, one hundred forty-one".