131113223221 has 8 divisors (see below), whose sum is σ = 138463482080. Its totient is φ = 123807920688.

The previous prime is 131113223201. The next prime is 131113223237. The reversal of 131113223221 is 122322311131.

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

It is not a de Polignac number, because 131113223221 - 2¹³ = 131113215029 is a prime.

It is a super-2 number, since 2×131113223221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131113223192 and 131113223201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131113223201) 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, 11233086 + ... + 11244751.

It is an arithmetic number, because the mean of its divisors is an integer number (17307935260).

Almost surely, 2^131113223221 is an apocalyptic number.

It is an amenable number.

131113223221 is a deficient number, since it is larger than the sum of its proper divisors (7350258859).

131113223221 is a wasteful number, since it uses less digits than its factorization.

131113223221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22478163.

The product of its digits is 432, while the sum is 22.

Adding to 131113223221 its reverse (122322311131), we get a palindrome (253435534352).

The spelling of 131113223221 in words is "one hundred thirty-one billion, one hundred thirteen million, two hundred twenty-three thousand, two hundred twenty-one".