210001222011001 has 4 divisors (see below), whose sum is σ = 211174413195600. Its totient is φ = 208828030826404.

The previous prime is 210001222010981. The next prime is 210001222011017. The reversal of 210001222011001 is 100110222100012.

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 210001222011001 - 2⁵ = 210001222010969 is a prime.

It is a super-2 number, since 2×210001222011001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210001222015001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586595592031 + ... + 586595592388.

It is an arithmetic number, because the mean of its divisors is an integer number (52793603298900).

Almost surely, 2^{210001222011001} is an apocalyptic number.

It is an amenable number.

210001222011001 is a deficient number, since it is larger than the sum of its proper divisors (1173191184599).

210001222011001 is a wasteful number, since it uses less digits than its factorization.

210001222011001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173191184598.

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

Adding to 210001222011001 its reverse (100110222100012), we get a palindrome (310111444111013).

The spelling of 210001222011001 in words is "two hundred ten trillion, one billion, two hundred twenty-two million, eleven thousand, one".