121401003 has 8 divisors (see below), whose sum is σ = 162093568. Its totient is φ = 80821224.

The previous prime is 121400957. The next prime is 121401011. The reversal of 121401003 is 300104121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121401003 - 2¹⁰ = 121399979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121401003.

It is not an unprimeable number, because it can be changed into a prime (121401103) 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, 25651 + ... + 30012.

It is an arithmetic number, because the mean of its divisors is an integer number (20261696).

Almost surely, 2^121401003 is an apocalyptic number.

121401003 is a deficient number, since it is larger than the sum of its proper divisors (40692565).

121401003 is an equidigital number, since it uses as much as digits as its factorization.

121401003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56393.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 121401003 is about 11018.2123323160. The cubic root of 121401003 is about 495.1545318972.

Adding to 121401003 its reverse (300104121), we get a palindrome (421505124).

The spelling of 121401003 in words is "one hundred twenty-one million, four hundred one thousand, three".