121321007 has 8 divisors (see below), whose sum is σ = 126411600. Its totient is φ = 116290944.

The previous prime is 121321001. The next prime is 121321019. The reversal of 121321007 is 700123121.

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 121321007 - 2⁸ = 121320751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121321001) 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, 11018 + ... + 19079.

It is an arithmetic number, because the mean of its divisors is an integer number (15801450).

Almost surely, 2^121321007 is an apocalyptic number.

121321007 is a deficient number, since it is larger than the sum of its proper divisors (5090593).

121321007 is a wasteful number, since it uses less digits than its factorization.

121321007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30265.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 121321007 is about 11014.5815626378. The cubic root of 121321007 is about 495.0457489261.

Adding to 121321007 its reverse (700123121), we get a palindrome (821444128).

The spelling of 121321007 in words is "one hundred twenty-one million, three hundred twenty-one thousand, seven".