211102101 has 12 divisors (see below), whose sum is σ = 348486112. Its totient is φ = 120629736.

The previous prime is 211102097. The next prime is 211102121. The reversal of 211102101 is 101201112.

It is a happy number.

It is not a de Polignac number, because 211102101 - 2² = 211102097 is a prime.

It is a super-2 number, since 2×211102101² = 89128194093228402, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211102121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1675351 + ... + 1675476.

Almost surely, 2^211102101 is an apocalyptic number.

211102101 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

211102101 is a deficient number, since it is larger than the sum of its proper divisors (137384011).

211102101 is a wasteful number, since it uses less digits than its factorization.

211102101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3350840 (or 3350837 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 211102101 is about 14529.3530826393. The cubic root of 211102101 is about 595.4301914459.

Adding to 211102101 its reverse (101201112), we get a palindrome (312303213).

The spelling of 211102101 in words is "two hundred eleven million, one hundred two thousand, one hundred one".