210122112001 has 16 divisors (see below), whose sum is σ = 223045598160. Its totient is φ = 197593876480.

The previous prime is 210122111999. The next prime is 210122112071. The reversal of 210122112001 is 100211221012.

It can be written as a sum of positive squares in 8 ways, for example, as 288490225 + 209833621776 = 16985^2 + 458076^2 .

It is a cyclic number.

It is not a de Polignac number, because 210122112001 - 2¹ = 210122111999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210122112071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 556071 + ... + 854083.

It is an arithmetic number, because the mean of its divisors is an integer number (13940349885).

Almost surely, 2^210122112001 is an apocalyptic number.

It is an amenable number.

210122112001 is a deficient number, since it is larger than the sum of its proper divisors (12923486159).

210122112001 is a wasteful number, since it uses less digits than its factorization.

210122112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298676.

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

Adding to 210122112001 its reverse (100211221012), we get a palindrome (310333333013).

The spelling of 210122112001 in words is "two hundred ten billion, one hundred twenty-two million, one hundred twelve thousand, one".