103220120221 has 4 divisors (see below), whose sum is σ = 103222156444. Its totient is φ = 103218084000.

The previous prime is 103220120131. The next prime is 103220120299. The reversal of 103220120221 is 122021022301.

It is a happy number.

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 50692522500 + 52527597721 = 225150^2 + 229189^2 .

It is a cyclic number.

It is not a de Polignac number, because 103220120221 - 2¹¹ = 103220118173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103220120195 and 103220120204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103220120321) 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, 940080 + ... + 1044121.

It is an arithmetic number, because the mean of its divisors is an integer number (25805539111).

Almost surely, 2^103220120221 is an apocalyptic number.

It is an amenable number.

103220120221 is a deficient number, since it is larger than the sum of its proper divisors (2036223).

103220120221 is an equidigital number, since it uses as much as digits as its factorization.

103220120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036222.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 103220120221 its reverse (122021022301), we get a palindrome (225241142522).

The spelling of 103220120221 in words is "one hundred three billion, two hundred twenty million, one hundred twenty thousand, two hundred twenty-one".