121342331 has 4 divisors (see below), whose sum is σ = 132373464. Its totient is φ = 110311200.

The previous prime is 121342327. The next prime is 121342349. The reversal of 121342331 is 133243121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121342331 - 2² = 121342327 is a prime.

It is a super-2 number, since 2×121342331² = 29447922585027122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121342031) 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 3 ways as a sum of consecutive naturals, for example, 5515550 + ... + 5515571.

It is an arithmetic number, because the mean of its divisors is an integer number (33093366).

Almost surely, 2^121342331 is an apocalyptic number.

121342331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121342331 is a deficient number, since it is larger than the sum of its proper divisors (11031133).

121342331 is a wasteful number, since it uses less digits than its factorization.

121342331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11031132.

The product of its digits is 432, while the sum is 20.

The square root of 121342331 is about 11015.5495096704. The cubic root of 121342331 is about 495.0747511503.

Adding to 121342331 its reverse (133243121), we get a palindrome (254585452).

The spelling of 121342331 in words is "one hundred twenty-one million, three hundred forty-two thousand, three hundred thirty-one".