210101220001 has 8 divisors (see below), whose sum is σ = 211449329000. Its totient is φ = 208755169920.

The previous prime is 210101219989. The next prime is 210101220011. The reversal of 210101220001 is 100022101012.

It can be written as a sum of positive squares in 4 ways, for example, as 57025440000 + 153075780001 = 238800^2 + 391249^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 210101220001 - 2³⁵ = 175741481633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210101220001.

It is not an unprimeable number, because it can be changed into a prime (210101220011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309726 + ... + 718423.

It is an arithmetic number, because the mean of its divisors is an integer number (26431166125).

Almost surely, 2^210101220001 is an apocalyptic number.

It is an amenable number.

210101220001 is a deficient number, since it is larger than the sum of its proper divisors (1348108999).

210101220001 is a wasteful number, since it uses less digits than its factorization.

210101220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029459.

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

Adding to 210101220001 its reverse (100022101012), we get a palindrome (310123321013).

The spelling of 210101220001 in words is "two hundred ten billion, one hundred one million, two hundred twenty thousand, one".