103203220221 has 6 divisors (see below), whose sum is σ = 149071318110. Its totient is φ = 68802146808.

The previous prime is 103203220217. The next prime is 103203220229. The reversal of 103203220221 is 122022302301.

103203220221 is a `hidden beast` number, since 1 + 0 + 320 + 322 + 0 + 2 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 103114200996 + 89019225 = 321114^2 + 9435^2 .

It is not a de Polignac number, because 103203220221 - 2² = 103203220217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103203220194 and 103203220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103203220229) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5733512226 + ... + 5733512243.

It is an arithmetic number, because the mean of its divisors is an integer number (24845219685).

Almost surely, 2^103203220221 is an apocalyptic number.

It is an amenable number.

103203220221 is a deficient number, since it is larger than the sum of its proper divisors (45868097889).

103203220221 is a wasteful number, since it uses less digits than its factorization.

103203220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11467024475 (or 11467024472 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 103203220221 its reverse (122022302301), we get a palindrome (225225522522).

The spelling of 103203220221 in words is "one hundred three billion, two hundred three million, two hundred twenty thousand, two hundred twenty-one".