13131000322221 has 16 divisors (see below), whose sum is σ = 17518031823680. Its totient is φ = 8748985029120.

The previous prime is 13131000322183. The next prime is 13131000322243. The reversal of 13131000322221 is 12222300013131.

13131000322221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13131000322221 - 2¹⁷ = 13131000191149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13131000321221) 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, 126012381 + ... + 126116541.

It is an arithmetic number, because the mean of its divisors is an integer number (1094876988980).

Almost surely, 2^{13131000322221} is an apocalyptic number.

It is an amenable number.

13131000322221 is a deficient number, since it is larger than the sum of its proper divisors (4387031501459).

13131000322221 is a wasteful number, since it uses less digits than its factorization.

13131000322221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127836.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 13131000322221 its reverse (12222300013131), we get a palindrome (25353300335352).

The spelling of 13131000322221 in words is "thirteen trillion, one hundred thirty-one billion, three hundred twenty-two thousand, two hundred twenty-one".