211020100223 has 4 divisors (see below), whose sum is σ = 213109408248. Its totient is φ = 208930792200.

The previous prime is 211020100219. The next prime is 211020100237. The reversal of 211020100223 is 322001020112.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 211020100223 - 2² = 211020100219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211020100198 and 211020100207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020100253) 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, 1044653861 + ... + 1044654062.

It is an arithmetic number, because the mean of its divisors is an integer number (53277352062).

Almost surely, 2^211020100223 is an apocalyptic number.

211020100223 is a deficient number, since it is larger than the sum of its proper divisors (2089308025).

211020100223 is a wasteful number, since it uses less digits than its factorization.

211020100223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089308024.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 211020100223 its reverse (322001020112), we get a palindrome (533021120335).

The spelling of 211020100223 in words is "two hundred eleven billion, twenty million, one hundred thousand, two hundred twenty-three".