133121003 has 4 divisors (see below), whose sum is σ = 133179840. Its totient is φ = 133062168.

The previous prime is 133120997. The next prime is 133121029. The reversal of 133121003 is 300121331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300121331 = 71 ⋅4227061.

It is a cyclic number.

It is not a de Polignac number, because 133121003 - 2⁸ = 133120747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133121063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25883 + ... + 30596.

It is an arithmetic number, because the mean of its divisors is an integer number (33294960).

Almost surely, 2^133121003 is an apocalyptic number.

133121003 is a deficient number, since it is larger than the sum of its proper divisors (58837).

133121003 is an equidigital number, since it uses as much as digits as its factorization.

133121003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58836.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 133121003 is about 11537.8075473636. The cubic root of 133121003 is about 510.6016262877.

Adding to 133121003 its reverse (300121331), we get a palindrome (433242334).

The spelling of 133121003 in words is "one hundred thirty-three million, one hundred twenty-one thousand, three".