131320000223221 has 4 divisors (see below), whose sum is σ = 131589651148192. Its totient is φ = 131050349298252.

The previous prime is 131320000223197. The next prime is 131320000223317. The reversal of 131320000223221 is 122322000023131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 131320000223221 - 2²³ = 131319991834613 is a prime.

It is a super-2 number, since 2×131320000223221² (a number of 29 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 = 131320000223192 and 131320000223201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131320000223821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134825461755 + ... + 134825462728.

It is an arithmetic number, because the mean of its divisors is an integer number (32897412787048).

Almost surely, 2^{131320000223221} is an apocalyptic number.

It is an amenable number.

131320000223221 is a deficient number, since it is larger than the sum of its proper divisors (269650924971).

131320000223221 is an equidigital number, since it uses as much as digits as its factorization.

131320000223221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269650924970.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 131320000223221 its reverse (122322000023131), we get a palindrome (253642000246352).

The spelling of 131320000223221 in words is "one hundred thirty-one trillion, three hundred twenty billion, two hundred twenty-three thousand, two hundred twenty-one".