131223034043221 has 24 divisors (see below), whose sum is σ = 145248021033984. Its totient is φ = 118307877700320.

The previous prime is 131223034043219. The next prime is 131223034043237. The reversal of 131223034043221 is 122340430322131.

It is not a de Polignac number, because 131223034043221 - 2¹ = 131223034043219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131223034043291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38476725 + ... + 41748106.

It is an arithmetic number, because the mean of its divisors is an integer number (6052000876416).

Almost surely, 2^{131223034043221} is an apocalyptic number.

It is an amenable number.

131223034043221 is a deficient number, since it is larger than the sum of its proper divisors (14024986990763).

131223034043221 is a wasteful number, since it uses less digits than its factorization.

131223034043221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80225089 (or 80225070 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 131223034043221 its reverse (122340430322131), we get a palindrome (253563464365352).

The spelling of 131223034043221 in words is "one hundred thirty-one trillion, two hundred twenty-three billion, thirty-four million, forty-three thousand, two hundred twenty-one".