103201221221 has 16 divisors (see below), whose sum is σ = 118204454400. Its totient is φ = 88263263088.

The previous prime is 103201221203. The next prime is 103201221257. The reversal of 103201221221 is 122122102301.

It is a de Polignac number, because none of the positive numbers 2^k-103201221221 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 103201221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103201221281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6118826 + ... + 6135668.

It is an arithmetic number, because the mean of its divisors is an integer number (7387778400).

Almost surely, 2^103201221221 is an apocalyptic number.

It is an amenable number.

103201221221 is a deficient number, since it is larger than the sum of its proper divisors (15003233179).

103201221221 is a wasteful number, since it uses less digits than its factorization.

103201221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18728.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 103201221221 its reverse (122122102301), we get a palindrome (225323323522).

The spelling of 103201221221 in words is "one hundred three billion, two hundred one million, two hundred twenty-one thousand, two hundred twenty-one".