211120211021223 has 48 divisors (see below), whose sum is σ = 328078591491456. Its totient is φ = 120409240311360.

The previous prime is 211120211021219. The next prime is 211120211021287. The reversal of 211120211021223 is 322120112021112.

It is not a de Polignac number, because 211120211021223 - 2² = 211120211021219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 211120211021223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211120211022223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 613169665 + ... + 613513877.

It is an arithmetic number, because the mean of its divisors is an integer number (6834970656072).

Almost surely, 2^{211120211021223} is an apocalyptic number.

211120211021223 is a deficient number, since it is larger than the sum of its proper divisors (116958380470233).

211120211021223 is a wasteful number, since it uses less digits than its factorization.

211120211021223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352204 (or 352197 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 211120211021223 its reverse (322120112021112), we get a palindrome (533240323042335).

The spelling of 211120211021223 in words is "two hundred eleven trillion, one hundred twenty billion, two hundred eleven million, twenty-one thousand, two hundred twenty-three".