12131022123220 has 192 divisors, whose sum is σ = 36216416549376. Its totient is φ = 3284935557120.

The previous prime is 12131022123137. The next prime is 12131022123239. The reversal of 12131022123220 is 2232122013121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 12131022123191 and 12131022123200.

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 17481577 + ... + 18162256.

It is an arithmetic number, because the mean of its divisors is an integer number (188627169528).

Almost surely, 2^{12131022123220} is an apocalyptic number.

12131022123220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12131022123220 is an abundant number, since it is smaller than the sum of its proper divisors (24085394426156).

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

12131022123220 is a wasteful number, since it uses less digits than its factorization.

12131022123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35643890 (or 35643888 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 12131022123220 its reverse (2232122013121), we get a palindrome (14363144136341).

The spelling of 12131022123220 in words is "twelve trillion, one hundred thirty-one billion, twenty-two million, one hundred twenty-three thousand, two hundred twenty".