201122131 has 4 divisors (see below), whose sum is σ = 229853872. Its totient is φ = 172390392.

The previous prime is 201122101. The next prime is 201122161. The reversal of 201122131 is 131221102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131221102 = 2 ⋅65610551.

It is an interprime number because it is at equal distance from previous prime (201122101) and next prime (201122161).

It is a cyclic number.

It is not a de Polignac number, because 201122131 - 2¹⁵ = 201089363 is a prime.

It is a super-2 number, since 2×201122131² = 80900223155962322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201122101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14365860 + ... + 14365873.

It is an arithmetic number, because the mean of its divisors is an integer number (57463468).

Almost surely, 2^201122131 is an apocalyptic number.

201122131 is a deficient number, since it is larger than the sum of its proper divisors (28731741).

201122131 is an equidigital number, since it uses as much as digits as its factorization.

201122131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28731740.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 201122131 is about 14181.7534529409. The cubic root of 201122131 is about 585.8952188338.

Adding to 201122131 its reverse (131221102), we get a palindrome (332343233).

It can be divided in two parts, 2011 and 22131, that added together give a palindrome (24142).

The spelling of 201122131 in words is "two hundred one million, one hundred twenty-two thousand, one hundred thirty-one".