211322130101 has 4 divisors (see below), whose sum is σ = 211362517932. Its totient is φ = 211281742272.

The previous prime is 211322130091. The next prime is 211322130137. The reversal of 211322130101 is 101031223112.

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 89639761201 + 121682368900 = 299399^2 + 348830^2 .

It is a cyclic number.

It is not a de Polignac number, because 211322130101 - 2⁶ = 211322130037 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 211322130101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211322133101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20186066 + ... + 20196531.

It is an arithmetic number, because the mean of its divisors is an integer number (52840629483).

Almost surely, 2^211322130101 is an apocalyptic number.

It is an amenable number.

211322130101 is a deficient number, since it is larger than the sum of its proper divisors (40387831).

211322130101 is an equidigital number, since it uses as much as digits as its factorization.

211322130101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40387830.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 211322130101 its reverse (101031223112), we get a palindrome (312353353213).

The spelling of 211322130101 in words is "two hundred eleven billion, three hundred twenty-two million, one hundred thirty thousand, one hundred one".