220103220121 has 8 divisors (see below), whose sum is σ = 222937085160. Its totient is φ = 217277372928.

The previous prime is 220103220107. The next prime is 220103220151. The reversal of 220103220121 is 121022301022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 12473539225 + 207629680896 = 111685^2 + 455664^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220103220121 - 2⁵ = 220103220089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220103220095 and 220103220104.

It is not an unprimeable number, because it can be changed into a prime (220103220151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1949196 + ... + 2059021.

It is an arithmetic number, because the mean of its divisors is an integer number (27867135645).

Almost surely, 2^220103220121 is an apocalyptic number.

It is an amenable number.

220103220121 is a deficient number, since it is larger than the sum of its proper divisors (2833865039).

220103220121 is an equidigital number, since it uses as much as digits as its factorization.

220103220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4008923.

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

Adding to 220103220121 its reverse (121022301022), we get a palindrome (341125521143).

The spelling of 220103220121 in words is "two hundred twenty billion, one hundred three million, two hundred twenty thousand, one hundred twenty-one".