101221030003 has 4 divisors (see below), whose sum is σ = 101221702120. Its totient is φ = 101220357888.

The previous prime is 101221029991. The next prime is 101221030021. The reversal of 101221030003 is 300030122101.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 101221030003 - 2¹⁷ = 101220898931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101221030093) 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, 5683 + ... + 449971.

It is an arithmetic number, because the mean of its divisors is an integer number (25305425530).

Almost surely, 2^101221030003 is an apocalyptic number.

101221030003 is a deficient number, since it is larger than the sum of its proper divisors (672117).

101221030003 is an equidigital number, since it uses as much as digits as its factorization.

101221030003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672116.

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

Adding to 101221030003 its reverse (300030122101), we get a palindrome (401251152104).

The spelling of 101221030003 in words is "one hundred one billion, two hundred twenty-one million, thirty thousand, three".