131012221401222 has 128 divisors (see below), whose sum is σ = 309680606896128. Its totient is φ = 36158500224000.

The previous prime is 131012221401203. The next prime is 131012221401239. The reversal of 131012221401222 is 222104122210131.

It is a junction number, because it is equal to n+sod(n) for n = 131012221401192 and 131012221401201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2403117108 + ... + 2403171624.

It is an arithmetic number, because the mean of its divisors is an integer number (2419379741376).

Almost surely, 2^{131012221401222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131012221401222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154840303448064).

131012221401222 is an abundant number, since it is smaller than the sum of its proper divisors (178668385494906).

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

131012221401222 is a wasteful number, since it uses less digits than its factorization.

131012221401222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57894.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 131012221401222 its reverse (222104122210131), we get a palindrome (353116343611353).

The spelling of 131012221401222 in words is "one hundred thirty-one trillion, twelve billion, two hundred twenty-one million, four hundred one thousand, two hundred twenty-two".