102003221213 has 4 divisors (see below), whose sum is σ = 102276688668. Its totient is φ = 101729753760.

The previous prime is 102003221209. The next prime is 102003221233. The reversal of 102003221213 is 312122300201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 78793612804 + 23209608409 = 280702^2 + 152347^2 .

It is a cyclic number.

It is not a de Polignac number, because 102003221213 - 2² = 102003221209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102003221191 and 102003221200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102003221233) 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, 136733168 + ... + 136733913.

It is an arithmetic number, because the mean of its divisors is an integer number (25569172167).

Almost surely, 2^102003221213 is an apocalyptic number.

It is an amenable number.

102003221213 is a deficient number, since it is larger than the sum of its proper divisors (273467455).

102003221213 is an equidigital number, since it uses as much as digits as its factorization.

102003221213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273467454.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 102003221213 its reverse (312122300201), we get a palindrome (414125521414).

The spelling of 102003221213 in words is "one hundred two billion, three million, two hundred twenty-one thousand, two hundred thirteen".