10031221003 has 4 divisors (see below), whose sum is σ = 10124970840. Its totient is φ = 9937471168.

The previous prime is 10031221001. The next prime is 10031221021. The reversal of 10031221003 is 30012213001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10031221003 - 2¹ = 10031221001 is a prime.

It is a super-2 number, since 2×10031221003² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10031221001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46874758 + ... + 46874971.

It is an arithmetic number, because the mean of its divisors is an integer number (2531242710).

Almost surely, 2^10031221003 is an apocalyptic number.

10031221003 is a deficient number, since it is larger than the sum of its proper divisors (93749837).

10031221003 is an equidigital number, since it uses as much as digits as its factorization.

10031221003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93749836.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 10031221003 its reverse (30012213001), we get a palindrome (40043434004).

The spelling of 10031221003 in words is "ten billion, thirty-one million, two hundred twenty-one thousand, three".