103120320221 has 4 divisors (see below), whose sum is σ = 103205054652. Its totient is φ = 103035585792.

The previous prime is 103120320203. The next prime is 103120320223. The reversal of 103120320221 is 122023021301.

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 26357522500 + 76762797721 = 162350^2 + 277061^2 .

It is a cyclic number.

It is not a de Polignac number, because 103120320221 - 2⁶ = 103120320157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 103120320221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103120320223) 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, 42365390 + ... + 42367823.

It is an arithmetic number, because the mean of its divisors is an integer number (25801263663).

Almost surely, 2^103120320221 is an apocalyptic number.

It is an amenable number.

103120320221 is a deficient number, since it is larger than the sum of its proper divisors (84734431).

103120320221 is an equidigital number, since it uses as much as digits as its factorization.

103120320221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84734430.

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

Adding to 103120320221 its reverse (122023021301), we get a palindrome (225143341522).

The spelling of 103120320221 in words is "one hundred three billion, one hundred twenty million, three hundred twenty thousand, two hundred twenty-one".