131213413221 has 16 divisors (see below), whose sum is σ = 193984661568. Its totient is φ = 78219619200.

The previous prime is 131213413217. The next prime is 131213413231. The reversal of 131213413221 is 122314312131.

It is not a de Polignac number, because 131213413221 - 2² = 131213413217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131213413191 and 131213413200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131213413231) 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, 32589496 + ... + 32593521.

It is an arithmetic number, because the mean of its divisors is an integer number (12124041348).

Almost surely, 2^131213413221 is an apocalyptic number.

131213413221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131213413221 is a deficient number, since it is larger than the sum of its proper divisors (62771248347).

131213413221 is a wasteful number, since it uses less digits than its factorization.

131213413221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65183092.

The product of its digits is 864, while the sum is 24.

Adding to 131213413221 its reverse (122314312131), we get a palindrome (253527725352).

The spelling of 131213413221 in words is "one hundred thirty-one billion, two hundred thirteen million, four hundred thirteen thousand, two hundred twenty-one".