103221200221 has 4 divisors (see below), whose sum is σ = 103234272444. Its totient is φ = 103208128000.

The previous prime is 103221200197. The next prime is 103221200227. The reversal of 103221200221 is 122002122301.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122002122301 = 76259 ⋅1599839.

It can be written as a sum of positive squares in 2 ways, for example, as 55938872196 + 47282328025 = 236514^2 + 217445^2 .

It is a cyclic number.

It is not a de Polignac number, because 103221200221 - 2⁵ = 103221200189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103221200195 and 103221200204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103221200227) 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, 6524260 + ... + 6540061.

It is an arithmetic number, because the mean of its divisors is an integer number (25808568111).

Almost surely, 2^103221200221 is an apocalyptic number.

It is an amenable number.

103221200221 is a deficient number, since it is larger than the sum of its proper divisors (13072223).

103221200221 is an equidigital number, since it uses as much as digits as its factorization.

103221200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13072222.

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

Adding to 103221200221 its reverse (122002122301), we get a palindrome (225223322522).

The spelling of 103221200221 in words is "one hundred three billion, two hundred twenty-one million, two hundred thousand, two hundred twenty-one".