103100213221 has 4 divisors (see below), whose sum is σ = 103101066592. Its totient is φ = 103099359852.

The previous prime is 103100213201. The next prime is 103100213231. The reversal of 103100213221 is 122312001301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 122312001301 = 7 ⋅17473143043.

It is a cyclic number.

It is not a de Polignac number, because 103100213221 - 2⁵ = 103100213189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103100213195 and 103100213204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103100213201) 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, 208155 + ... + 499528.

It is an arithmetic number, because the mean of its divisors is an integer number (25775266648).

Almost surely, 2^103100213221 is an apocalyptic number.

It is an amenable number.

103100213221 is a deficient number, since it is larger than the sum of its proper divisors (853371).

103100213221 is an equidigital number, since it uses as much as digits as its factorization.

103100213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853370.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 103100213221 its reverse (122312001301), we get a palindrome (225412214522).

The spelling of 103100213221 in words is "one hundred three billion, one hundred million, two hundred thirteen thousand, two hundred twenty-one".