131221033231202 has 8 divisors (see below), whose sum is σ = 197563265646300. Its totient is φ = 65366611349104.

The previous prime is 131221033231111. The next prime is 131221033231219. The reversal of 131221033231202 is 202132330122131.

It can be written as a sum of positive squares in 2 ways, for example, as 108007610514241 + 23213422716961 = 10392671^2 + 4818031^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121952632577 + ... + 121952633652.

Almost surely, 2^{131221033231202} is an apocalyptic number.

131221033231202 is a deficient number, since it is larger than the sum of its proper divisors (66342232415098).

131221033231202 is a wasteful number, since it uses less digits than its factorization.

131221033231202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243905266500.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 131221033231202 its reverse (202132330122131), we get a palindrome (333353363353333).

The spelling of 131221033231202 in words is "one hundred thirty-one trillion, two hundred twenty-one billion, thirty-three million, two hundred thirty-one thousand, two hundred two".