121611351 has 8 divisors (see below), whose sum is σ = 164102400. Its totient is φ = 80097272.

The previous prime is 121611349. The next prime is 121611359. The reversal of 121611351 is 153116121.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 121611351 - 2¹ = 121611349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121611359) 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, 243951 + ... + 244448.

It is an arithmetic number, because the mean of its divisors is an integer number (20512800).

Almost surely, 2^121611351 is an apocalyptic number.

121611351 is a deficient number, since it is larger than the sum of its proper divisors (42491049).

121611351 is an equidigital number, since it uses as much as digits as its factorization.

121611351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488485.

The product of its digits is 180, while the sum is 21.

The square root of 121611351 is about 11027.7536697190. The cubic root of 121611351 is about 495.4403468560.

Adding to 121611351 its reverse (153116121), we get a palindrome (274727472).

The spelling of 121611351 in words is "one hundred twenty-one million, six hundred eleven thousand, three hundred fifty-one".