211113122001 has 4 divisors (see below), whose sum is σ = 281484162672. Its totient is φ = 140742081332.

The previous prime is 211113121987. The next prime is 211113122029. The reversal of 211113122001 is 100221311112.

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 211113122001 - 2⁶ = 211113121937 is a prime.

It is a super-2 number, since 2×211113122001² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211113122071) 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, 35185520331 + ... + 35185520336.

It is an arithmetic number, because the mean of its divisors is an integer number (70371040668).

Almost surely, 2^211113122001 is an apocalyptic number.

It is an amenable number.

211113122001 is a deficient number, since it is larger than the sum of its proper divisors (70371040671).

211113122001 is an equidigital number, since it uses as much as digits as its factorization.

211113122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70371040670.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 211113122001 its reverse (100221311112), we get a palindrome (311334433113).

The spelling of 211113122001 in words is "two hundred eleven billion, one hundred thirteen million, one hundred twenty-two thousand, one".