131422201221 has 8 divisors (see below), whose sum is σ = 184452212320. Its totient is φ = 83003495472.

The previous prime is 131422201123. The next prime is 131422201241. The reversal of 131422201221 is 122102224131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131422201221 - 2⁹ = 131422200709 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 (131422201241) 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, 1152826270 + ... + 1152826383.

It is an arithmetic number, because the mean of its divisors is an integer number (23056526540).

Almost surely, 2^131422201221 is an apocalyptic number.

It is an amenable number.

131422201221 is a deficient number, since it is larger than the sum of its proper divisors (53030011099).

131422201221 is a wasteful number, since it uses less digits than its factorization.

131422201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305652675.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 131422201221 its reverse (122102224131), we get a palindrome (253524425352).

The spelling of 131422201221 in words is "one hundred thirty-one billion, four hundred twenty-two million, two hundred one thousand, two hundred twenty-one".