131221141424 has 40 divisors (see below), whose sum is σ = 270313444368. Its totient is φ = 61494865920.

The previous prime is 131221141421. The next prime is 131221141439. The reversal of 131221141424 is 424141122131.

It is a junction number, because it is equal to n+sod(n) for n = 131221141393 and 131221141402.

It is not an unprimeable number, because it can be changed into a prime (131221141421) 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, 935342 + ... + 1066445.

Almost surely, 2^131221141424 is an apocalyptic number.

It is an amenable number.

131221141424 is an abundant number, since it is smaller than the sum of its proper divisors (139092302944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131221141424 is a wasteful number, since it uses less digits than its factorization.

131221141424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2002053 (or 2002047 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

Adding to 131221141424 its reverse (424141122131), we get a palindrome (555362263555).

The spelling of 131221141424 in words is "one hundred thirty-one billion, two hundred twenty-one million, one hundred forty-one thousand, four hundred twenty-four".