211100123320 has 16 divisors (see below), whose sum is σ = 474975277560. Its totient is φ = 84440049312.

The previous prime is 211100123317. The next prime is 211100123327. The reversal of 211100123320 is 23321001112.

It is a junction number, because it is equal to n+sod(n) for n = 211100123294 and 211100123303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211100123327) 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, 2638751502 + ... + 2638751581.

Almost surely, 2^211100123320 is an apocalyptic number.

211100123320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211100123320 is an abundant number, since it is smaller than the sum of its proper divisors (263875154240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211100123320 is a wasteful number, since it uses less digits than its factorization.

211100123320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5277503094 (or 5277503090 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 211100123320 its reverse (23321001112), we get a palindrome (234421124432).

The spelling of 211100123320 in words is "two hundred eleven billion, one hundred million, one hundred twenty-three thousand, three hundred twenty".