211010112101 has 4 divisors (see below), whose sum is σ = 212426287500. Its totient is φ = 209593936704.

The previous prime is 211010112007. The next prime is 211010112119. The reversal of 211010112101 is 101211010112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18056371876 + 192953740225 = 134374^2 + 439265^2 .

It is a cyclic number.

It is not a de Polignac number, because 211010112101 - 2³⁴ = 193830242917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211010112601) 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 3 ways as a sum of consecutive naturals, for example, 708087476 + ... + 708087773.

It is an arithmetic number, because the mean of its divisors is an integer number (53106571875).

Almost surely, 2^211010112101 is an apocalyptic number.

It is an amenable number.

211010112101 is a deficient number, since it is larger than the sum of its proper divisors (1416175399).

211010112101 is a wasteful number, since it uses less digits than its factorization.

211010112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416175398.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 211010112101 its reverse (101211010112), we get a palindrome (312221122213).

It can be divided in two parts, 211010112 and 101, that multiplied together give a palindrome (21312021312).

The spelling of 211010112101 in words is "two hundred eleven billion, ten million, one hundred twelve thousand, one hundred one".