121133021 has 8 divisors (see below), whose sum is σ = 124210944. Its totient is φ = 118067040.

The previous prime is 121133017. The next prime is 121133069. The reversal of 121133021 is 120331121.

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 121133021 - 2² = 121133017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121132987 and 121133005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121133081) 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, 19700 + ... + 25106.

It is an arithmetic number, because the mean of its divisors is an integer number (15526368).

Almost surely, 2^121133021 is an apocalyptic number.

It is an amenable number.

121133021 is a deficient number, since it is larger than the sum of its proper divisors (3077923).

121133021 is an equidigital number, since it uses as much as digits as its factorization.

121133021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5971.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 121133021 is about 11006.0447482281. The cubic root of 121133021 is about 494.7899268444.

Adding to 121133021 its reverse (120331121), we get a palindrome (241464142).

The spelling of 121133021 in words is "one hundred twenty-one million, one hundred thirty-three thousand, twenty-one".