121431011 has 8 divisors (see below), whose sum is σ = 133813680. Its totient is φ = 109482912.

The previous prime is 121430993. The next prime is 121431019. The reversal of 121431011 is 110134121.

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 121431011 - 2¹⁴ = 121414627 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (121431019) 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, 108056 + ... + 109173.

It is an arithmetic number, because the mean of its divisors is an integer number (16726710).

Almost surely, 2^121431011 is an apocalyptic number.

121431011 is a deficient number, since it is larger than the sum of its proper divisors (12382669).

121431011 is a wasteful number, since it uses less digits than its factorization.

121431011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217285.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 121431011 is about 11019.5739935807. The cubic root of 121431011 is about 495.1953261047.

Adding to 121431011 its reverse (110134121), we get a palindrome (231565132).

The spelling of 121431011 in words is "one hundred twenty-one million, four hundred thirty-one thousand, eleven".