211021002223 has 4 divisors (see below), whose sum is σ = 211136758848. Its totient is φ = 210905245600.

The previous prime is 211021002221. The next prime is 211021002229. The reversal of 211021002223 is 322200120112.

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 211021002223 - 2¹ = 211021002221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 211021002197 and 211021002206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211021002221) 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, 57875578 + ... + 57879223.

It is an arithmetic number, because the mean of its divisors is an integer number (52784189712).

Almost surely, 2^211021002223 is an apocalyptic number.

211021002223 is a deficient number, since it is larger than the sum of its proper divisors (115756625).

211021002223 is a wasteful number, since it uses less digits than its factorization.

211021002223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115756624.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 211021002223 its reverse (322200120112), we get a palindrome (533221122335).

The spelling of 211021002223 in words is "two hundred eleven billion, twenty-one million, two thousand, two hundred twenty-three".