131220502350522 has 256 divisors, whose sum is σ = 301286180192256. Its totient is φ = 37814667264000.

The previous prime is 131220502350481. The next prime is 131220502350557. The reversal of 131220502350522 is 225053205022131.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 14562252997 + ... + 14562262007.

It is an arithmetic number, because the mean of its divisors is an integer number (1176899141376).

Almost surely, 2^{131220502350522} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131220502350522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150643090096128).

131220502350522 is an abundant number, since it is smaller than the sum of its proper divisors (170065677841734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131220502350522 is a wasteful number, since it uses less digits than its factorization.

131220502350522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10525.

The product of its (nonzero) digits is 36000, while the sum is 33.

Adding to 131220502350522 its reverse (225053205022131), we get a palindrome (356273707372653).

The spelling of 131220502350522 in words is "one hundred thirty-one trillion, two hundred twenty billion, five hundred two million, three hundred fifty thousand, five hundred twenty-two".