131120023221 has 48 divisors (see below), whose sum is σ = 207831723840. Its totient is φ = 78998976000.

The previous prime is 131120023189. The next prime is 131120023253. The reversal of 131120023221 is 122320021131.

It is an interprime number because it is at equal distance from previous prime (131120023189) and next prime (131120023253).

It is not a de Polignac number, because 131120023221 - 2⁵ = 131120023189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131120023194 and 131120023203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131120023121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21073891 + ... + 21080111.

It is an arithmetic number, because the mean of its divisors is an integer number (4329827580).

Almost surely, 2^131120023221 is an apocalyptic number.

131120023221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131120023221 is a deficient number, since it is larger than the sum of its proper divisors (76711700619).

131120023221 is a wasteful number, since it uses less digits than its factorization.

131120023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7458 (or 7455 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 131120023221 its reverse (122320021131), we get a palindrome (253440044352).

The spelling of 131120023221 in words is "one hundred thirty-one billion, one hundred twenty million, twenty-three thousand, two hundred twenty-one".