103201131221 has 8 divisors (see below), whose sum is σ = 104155110840. Its totient is φ = 102247282368.

The previous prime is 103201131167. The next prime is 103201131227. The reversal of 103201131221 is 122131102301.

It can be written as a sum of positive squares in 4 ways, for example, as 12892467025 + 90308664196 = 113545^2 + 300514^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103201131221 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 103201131221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103201131227) 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, 2349755 + ... + 2393271.

It is an arithmetic number, because the mean of its divisors is an integer number (13019388855).

Almost surely, 2^103201131221 is an apocalyptic number.

It is an amenable number.

103201131221 is a deficient number, since it is larger than the sum of its proper divisors (953979619).

103201131221 is a wasteful number, since it uses less digits than its factorization.

103201131221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65383.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 103201131221 its reverse (122131102301), we get a palindrome (225332233522).

The spelling of 103201131221 in words is "one hundred three billion, two hundred one million, one hundred thirty-one thousand, two hundred twenty-one".