13410321221 has 6 divisors (see below), whose sum is σ = 14740270566. Its totient is φ = 12191201000.

The previous prime is 13410321151. The next prime is 13410321227. The reversal of 13410321221 is 12212301431.

It can be written as a sum of positive squares in only one way, i.e., 9003352996 + 4406968225 = 94886^2 + 66385^2 .

It is not a de Polignac number, because 13410321221 - 2¹⁰ = 13410320197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13410321193 and 13410321202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13410321227) 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, 55414430 + ... + 55414671.

It is an arithmetic number, because the mean of its divisors is an integer number (2456711761).

Almost surely, 2^13410321221 is an apocalyptic number.

13410321221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13410321221 is a deficient number, since it is larger than the sum of its proper divisors (1329949345).

13410321221 is a wasteful number, since it uses less digits than its factorization.

13410321221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110829123 (or 110829112 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 13410321221 its reverse (12212301431), we get a palindrome (25622622652).

The spelling of 13410321221 in words is "thirteen billion, four hundred ten million, three hundred twenty-one thousand, two hundred twenty-one".