201322121131 has 4 divisors (see below), whose sum is σ = 201679709832. Its totient is φ = 200964532432.

The previous prime is 201322121113. The next prime is 201322121153. The reversal of 201322121131 is 131121223102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131121223102 = 2 ⋅65560611551.

It is a cyclic number.

It is not a de Polignac number, because 201322121131 - 2⁷ = 201322121003 is a prime.

It is a super-2 number, since 2×201322121131² (a number of 23 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 = 201322121099 and 201322121108.

It is not an unprimeable number, because it can be changed into a prime (201322121731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178793506 + ... + 178794631.

It is an arithmetic number, because the mean of its divisors is an integer number (50419927458).

Almost surely, 2^201322121131 is an apocalyptic number.

201322121131 is a deficient number, since it is larger than the sum of its proper divisors (357588701).

201322121131 is an equidigital number, since it uses as much as digits as its factorization.

201322121131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357588700.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 201322121131 its reverse (131121223102), we get a palindrome (332443344233).

The spelling of 201322121131 in words is "two hundred one billion, three hundred twenty-two million, one hundred twenty-one thousand, one hundred thirty-one".