20112221322131 has 16 divisors (see below), whose sum is σ = 20455377676800. Its totient is φ = 19770360290208.

The previous prime is 20112221322073. The next prime is 20112221322203. The reversal of 20112221322131 is 13122312221102.

It is a cyclic number.

It is not a de Polignac number, because 20112221322131 - 2²⁶ = 20112154213267 is a prime.

It is a super-2 number, since 2×20112221322131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20112221322097 and 20112221322106.

It is not an unprimeable number, because it can be changed into a prime (20112221322931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85441265 + ... + 85676333.

It is an arithmetic number, because the mean of its divisors is an integer number (1278461104800).

Almost surely, 2^{20112221322131} is an apocalyptic number.

20112221322131 is a deficient number, since it is larger than the sum of its proper divisors (343156354669).

20112221322131 is a wasteful number, since it uses less digits than its factorization.

20112221322131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237818.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 20112221322131 its reverse (13122312221102), we get a palindrome (33234533543233).

The spelling of 20112221322131 in words is "twenty trillion, one hundred twelve billion, two hundred twenty-one million, three hundred twenty-two thousand, one hundred thirty-one".