131221320001202 has 4 divisors (see below), whose sum is σ = 196831980001806. Its totient is φ = 65610660000600.

The previous prime is 131221320001171. The next prime is 131221320001217. The reversal of 131221320001202 is 202100023122131.

131221320001202 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 114917563841521 + 16303756159681 = 10719961^2 + 4037791^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32805330000299 + ... + 32805330000302.

Almost surely, 2^{131221320001202} is an apocalyptic number.

131221320001202 is a deficient number, since it is larger than the sum of its proper divisors (65610660000604).

131221320001202 is an equidigital number, since it uses as much as digits as its factorization.

131221320001202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65610660000603.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 131221320001202 its reverse (202100023122131), we get a palindrome (333321343123333).

The spelling of 131221320001202 in words is "one hundred thirty-one trillion, two hundred twenty-one billion, three hundred twenty million, one thousand, two hundred two".