10003221155 has 4 divisors (see below), whose sum is σ = 12003865392. Its totient is φ = 8002576920.

The previous prime is 10003221133. The next prime is 10003221191. The reversal of 10003221155 is 55112230001.

It is a happy number.

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

It is not a de Polignac number, because 10003221155 - 2¹⁸ = 10002959011 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000322111 + ... + 1000322120.

It is an arithmetic number, because the mean of its divisors is an integer number (3000966348).

Almost surely, 2^10003221155 is an apocalyptic number.

10003221155 is a deficient number, since it is larger than the sum of its proper divisors (2000644237).

10003221155 is an equidigital number, since it uses as much as digits as its factorization.

10003221155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000644236.

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 10003221155 its reverse (55112230001), we get a palindrome (65115451156).

The spelling of 10003221155 in words is "ten billion, three million, two hundred twenty-one thousand, one hundred fifty-five".