121552141 has 6 divisors (see below), whose sum is σ = 124927530. Its totient is φ = 118265616.

The previous prime is 121552129. The next prime is 121552157. The reversal of 121552141 is 141255121.

It can be written as a sum of positive squares in 3 ways, for example, as 96452041 + 25100100 = 9821^2 + 5010^2 .

It is not a de Polignac number, because 121552141 - 2⁹ = 121551629 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 (121552111) 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 5 ways as a sum of consecutive naturals, for example, 43026 + ... + 45763.

It is an arithmetic number, because the mean of its divisors is an integer number (20821255).

Almost surely, 2^121552141 is an apocalyptic number.

It is an amenable number.

121552141 is a deficient number, since it is larger than the sum of its proper divisors (3375389).

121552141 is an frugal number, since it uses more digits than its factorization.

121552141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88863 (or 88826 counting only the distinct ones).

The product of its digits is 400, while the sum is 22.

The square root of 121552141 is about 11025.0687526201. The cubic root of 121552141 is about 495.3599273204.

The spelling of 121552141 in words is "one hundred twenty-one million, five hundred fifty-two thousand, one hundred forty-one".