131222010020 has 96 divisors (see below), whose sum is σ = 296946155520. Its totient is φ = 48552462720.

The previous prime is 131222010011. The next prime is 131222010037. The reversal of 131222010020 is 20010222131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 131222009977 and 131222010004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7689137 + ... + 7706183.

It is an arithmetic number, because the mean of its divisors is an integer number (3093189120).

Almost surely, 2^131222010020 is an apocalyptic number.

131222010020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131222010020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148473077760).

131222010020 is an abundant number, since it is smaller than the sum of its proper divisors (165724145500).

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

131222010020 is a wasteful number, since it uses less digits than its factorization.

131222010020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17553 (or 17551 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 131222010020 its reverse (20010222131), we get a palindrome (151232232151).

The spelling of 131222010020 in words is "one hundred thirty-one billion, two hundred twenty-two million, ten thousand, twenty".