121551414 has 16 divisors (see below), whose sum is σ = 243311040. Its totient is φ = 40482440.

The previous prime is 121551413. The next prime is 121551427. The reversal of 121551414 is 414155121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121551413) 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, 492 + ... + 15599.

It is an arithmetic number, because the mean of its divisors is an integer number (15206940).

Almost surely, 2^121551414 is an apocalyptic number.

121551414 is an abundant number, since it is smaller than the sum of its proper divisors (121759626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121551414 is a wasteful number, since it uses less digits than its factorization.

121551414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17355.

The product of its digits is 800, while the sum is 24.

The square root of 121551414 is about 11025.0357822549. The cubic root of 121551414 is about 495.3589397405.

The spelling of 121551414 in words is "one hundred twenty-one million, five hundred fifty-one thousand, four hundred fourteen".