211323223320101 has 4 divisors (see below), whose sum is σ = 211325553093900. Its totient is φ = 211320893546304.

The previous prime is 211323223320071. The next prime is 211323223320163. The reversal of 211323223320101 is 101023322323112.

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 179478939150625 + 31844284169476 = 13396975^2 + 5643074^2 .

It is a cyclic number.

It is not a de Polignac number, because 211323223320101 - 2⁶ = 211323223320037 is a prime.

It is a super-2 number, since 2×211323223320101² (a number of 29 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 (211323223220101) 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, 1164750836 + ... + 1164932253.

It is an arithmetic number, because the mean of its divisors is an integer number (52831388273475).

Almost surely, 2^{211323223320101} is an apocalyptic number.

It is an amenable number.

211323223320101 is a deficient number, since it is larger than the sum of its proper divisors (2329773799).

211323223320101 is an equidigital number, since it uses as much as digits as its factorization.

211323223320101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329773798.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 211323223320101 its reverse (101023322323112), we get a palindrome (312346545643213).

The spelling of 211323223320101 in words is "two hundred eleven trillion, three hundred twenty-three billion, two hundred twenty-three million, three hundred twenty thousand, one hundred one".