121041551 has 8 divisors (see below), whose sum is σ = 121987200. Its totient is φ = 120099672.

The previous prime is 121041499. The next prime is 121041587. The reversal of 121041551 is 155140121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121041551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121041251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103496 + ... + 104658.

It is an arithmetic number, because the mean of its divisors is an integer number (15248400).

Almost surely, 2^121041551 is an apocalyptic number.

121041551 is a deficient number, since it is larger than the sum of its proper divisors (945649).

121041551 is a wasteful number, since it uses less digits than its factorization.

121041551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 121041551 is about 11001.8885197042. Note that the first 3 decimals coincide. The cubic root of 121041551 is about 494.6653535148.

Adding to 121041551 its reverse (155140121), we get a palindrome (276181672).

The spelling of 121041551 in words is "one hundred twenty-one million, forty-one thousand, five hundred fifty-one".