211120122001 has 4 divisors (see below), whose sum is σ = 211471404004. Its totient is φ = 210768840000.

The previous prime is 211120121981. The next prime is 211120122097. The reversal of 211120122001 is 100221021112.

211120122001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 115057318401 + 96062803600 = 339201^2 + 309940^2 .

It is a cyclic number.

It is not a de Polignac number, because 211120122001 - 2⁵ = 211120121969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211120122701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175640100 + ... + 175641301.

It is an arithmetic number, because the mean of its divisors is an integer number (52867851001).

Almost surely, 2^211120122001 is an apocalyptic number.

It is an amenable number.

211120122001 is a deficient number, since it is larger than the sum of its proper divisors (351282003).

211120122001 is an equidigital number, since it uses as much as digits as its factorization.

211120122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351282002.

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

Adding to 211120122001 its reverse (100221021112), we get a palindrome (311341143113).

The spelling of 211120122001 in words is "two hundred eleven billion, one hundred twenty million, one hundred twenty-two thousand, one".