211031102101 has 8 divisors (see below), whose sum is σ = 213727062744. Its totient is φ = 208349675520.

The previous prime is 211031102099. The next prime is 211031102111. The reversal of 211031102101 is 101201130112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 98956801476 + 112074300625 = 314574^2 + 334775^2 .

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 211031102101 - 2¹ = 211031102099 is a prime.

It is a super-2 number, since 2×211031102101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211031102111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3604290 + ... + 3662371.

It is an arithmetic number, because the mean of its divisors is an integer number (26715882843).

Almost surely, 2^211031102101 is an apocalyptic number.

It is an amenable number.

211031102101 is a deficient number, since it is larger than the sum of its proper divisors (2695960643).

211031102101 is a wasteful number, since it uses less digits than its factorization.

211031102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7267031.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 211031102101 its reverse (101201130112), we get a palindrome (312232232213).

The spelling of 211031102101 in words is "two hundred eleven billion, thirty-one million, one hundred two thousand, one hundred one".