121133331 has 12 divisors (see below), whose sum is σ = 190876920. Its totient is φ = 73414080.

The previous prime is 121133323. The next prime is 121133333. The reversal of 121133331 is 133331121.

It is a happy number.

It is not a de Polignac number, because 121133331 - 2³ = 121133323 is a prime.

It is a super-2 number, since 2×121133331² = 29346567758311122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121133333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 611686 + ... + 611883.

It is an arithmetic number, because the mean of its divisors is an integer number (15906410).

Almost surely, 2^121133331 is an apocalyptic number.

121133331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121133331 is a deficient number, since it is larger than the sum of its proper divisors (69743589).

121133331 is a wasteful number, since it uses less digits than its factorization.

121133331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223586 (or 1223583 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 121133331 is about 11006.0588313892. The cubic root of 121133331 is about 494.7903489279.

Adding to 121133331 its reverse (133331121), we get a palindrome (254464452).

The spelling of 121133331 in words is "one hundred twenty-one million, one hundred thirty-three thousand, three hundred thirty-one".