103102020121321 has 16 divisors (see below), whose sum is σ = 114864179366160. Its totient is φ = 91887323673600.

The previous prime is 103102020121291. The next prime is 103102020121337. The reversal of 103102020121321 is 123121020201301.

It can be written as a sum of positive squares in 8 ways, for example, as 6412872493225 + 96689147628096 = 2532365^2 + 9833064^2 .

It is not a de Polignac number, because 103102020121321 - 2²⁷ = 103101885903593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103102020121361) 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, 14401621 + ... + 20337421.

It is an arithmetic number, because the mean of its divisors is an integer number (7179011210385).

Almost surely, 2^{103102020121321} is an apocalyptic number.

It is an amenable number.

103102020121321 is a deficient number, since it is larger than the sum of its proper divisors (11762159244839).

103102020121321 is a wasteful number, since it uses less digits than its factorization.

103102020121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5981916.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 103102020121321 its reverse (123121020201301), we get a palindrome (226223040322622).

The spelling of 103102020121321 in words is "one hundred three trillion, one hundred two billion, twenty million, one hundred twenty-one thousand, three hundred twenty-one".