201122112001 has 4 divisors (see below), whose sum is σ = 203667961600. Its totient is φ = 198576262404.

The previous prime is 201122111933. The next prime is 201122112011. The reversal of 201122112001 is 100211221102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201122112001 - 2¹⁹ = 201121587713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201122112011) 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, 1272924681 + ... + 1272924838.

It is an arithmetic number, because the mean of its divisors is an integer number (50916990400).

Almost surely, 2^201122112001 is an apocalyptic number.

It is an amenable number.

201122112001 is a deficient number, since it is larger than the sum of its proper divisors (2545849599).

201122112001 is an equidigital number, since it uses as much as digits as its factorization.

201122112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2545849598.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 201122112001 its reverse (100211221102), we get a palindrome (301333333103).

The spelling of 201122112001 in words is "two hundred one billion, one hundred twenty-two million, one hundred twelve thousand, one".