201122431001 has 4 divisors (see below), whose sum is σ = 201426701604. Its totient is φ = 200818160400.

The previous prime is 201122430911. The next prime is 201122431009. The reversal of 201122431001 is 100134221102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 113919750400 + 87202680601 = 337520^2 + 295301^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201122431001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201122431009) 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, 152134310 + ... + 152135631.

It is an arithmetic number, because the mean of its divisors is an integer number (50356675401).

Almost surely, 2^201122431001 is an apocalyptic number.

It is an amenable number.

201122431001 is a deficient number, since it is larger than the sum of its proper divisors (304270603).

201122431001 is an equidigital number, since it uses as much as digits as its factorization.

201122431001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304270602.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 201122431001 its reverse (100134221102), we get a palindrome (301256652103).

The spelling of 201122431001 in words is "two hundred one billion, one hundred twenty-two million, four hundred thirty-one thousand, one".