121411331 has 4 divisors (see below), whose sum is σ = 128553192. Its totient is φ = 114269472.

The previous prime is 121411271. The next prime is 121411333. The reversal of 121411331 is 133114121.

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 121411331 - 2²² = 117217027 is a prime.

It is a super-2 number, since 2×121411331² = 29481422590383122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 7141843 = 121411331 / (1 + 2 + 1 + 4 + 1 + 1 + 3 + 3 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121411333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3570905 + ... + 3570938.

It is an arithmetic number, because the mean of its divisors is an integer number (32138298).

Almost surely, 2^121411331 is an apocalyptic number.

121411331 is a deficient number, since it is larger than the sum of its proper divisors (7141861).

121411331 is an equidigital number, since it uses as much as digits as its factorization.

121411331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7141860.

The product of its digits is 72, while the sum is 17.

The square root of 121411331 is about 11018.6810009184. The cubic root of 121411331 is about 495.1685729976.

Adding to 121411331 its reverse (133114121), we get a palindrome (254525452).

The spelling of 121411331 in words is "one hundred twenty-one million, four hundred eleven thousand, three hundred thirty-one".