210022100001001 has 4 divisors (see below), whose sum is σ = 210083635925892. Its totient is φ = 209960564076112.

The previous prime is 210022100000989. The next prime is 210022100001013. The reversal of 210022100001001 is 100100001220012.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (210022100000989) and next prime (210022100001013).

It can be written as a sum of positive squares in 2 ways, for example, as 184131303111001 + 25890796890000 = 13569499^2 + 5088300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210022100001001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210022100005001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30767957326 + ... + 30767964151.

It is an arithmetic number, because the mean of its divisors is an integer number (52520908981473).

Almost surely, 2^{210022100001001} is an apocalyptic number.

It is an amenable number.

210022100001001 is a deficient number, since it is larger than the sum of its proper divisors (61535924891).

210022100001001 is an equidigital number, since it uses as much as digits as its factorization.

210022100001001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61535924890.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 210022100001001 its reverse (100100001220012), we get a palindrome (310122101221013).

The spelling of 210022100001001 in words is "two hundred ten trillion, twenty-two billion, one hundred million, one thousand, one".