131405322145222 has 4 divisors (see below), whose sum is σ = 197107983217836. Its totient is φ = 65702661072610.

The previous prime is 131405322145169. The next prime is 131405322145277. The reversal of 131405322145222 is 222541223504131.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32851330536304 + ... + 32851330536307.

It is an arithmetic number, because the mean of its divisors is an integer number (49276995804459).

Almost surely, 2^{131405322145222} is an apocalyptic number.

131405322145222 is a deficient number, since it is larger than the sum of its proper divisors (65702661072614).

131405322145222 is an equidigital number, since it uses as much as digits as its factorization.

131405322145222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65702661072613.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 131405322145222 its reverse (222541223504131), we get a palindrome (353946545649353).

The spelling of 131405322145222 in words is "one hundred thirty-one trillion, four hundred five billion, three hundred twenty-two million, one hundred forty-five thousand, two hundred twenty-two".