211210101222101 has 16 divisors (see below), whose sum is σ = 214700339500800. Its totient is φ = 207736068469248.

The previous prime is 211210101222073. The next prime is 211210101222103. The reversal of 211210101222101 is 101222101012112.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211210101222101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 211210101222101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211210101222103) 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, 438301070 + ... + 438782688.

It is an arithmetic number, because the mean of its divisors is an integer number (13418771218800).

Almost surely, 2^{211210101222101} is an apocalyptic number.

It is an amenable number.

211210101222101 is a deficient number, since it is larger than the sum of its proper divisors (3490238278699).

211210101222101 is a wasteful number, since it uses less digits than its factorization.

211210101222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498428.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 211210101222101 its reverse (101222101012112), we get a palindrome (312432202234213).

The spelling of 211210101222101 in words is "two hundred eleven trillion, two hundred ten billion, one hundred one million, two hundred twenty-two thousand, one hundred one".