131212220441 has 32 divisors (see below), whose sum is σ = 142331904000. Its totient is φ = 120558146688.

The previous prime is 131212220423. The next prime is 131212220449. The reversal of 131212220441 is 144022212131.

It is a cyclic number.

It is not a de Polignac number, because 131212220441 - 2²² = 131208026137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131212220449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91182200 + ... + 91183638.

It is an arithmetic number, because the mean of its divisors is an integer number (4447872000).

Almost surely, 2^131212220441 is an apocalyptic number.

It is an amenable number.

131212220441 is a deficient number, since it is larger than the sum of its proper divisors (11119683559).

131212220441 is a wasteful number, since it uses less digits than its factorization.

131212220441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2213.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 131212220441 its reverse (144022212131), we get a palindrome (275234432572).

The spelling of 131212220441 in words is "one hundred thirty-one billion, two hundred twelve million, two hundred twenty thousand, four hundred forty-one".