211020212223 has 12 divisors (see below), whose sum is σ = 313045000008. Its totient is φ = 136877975280.

The previous prime is 211020212171. The next prime is 211020212231. The reversal of 211020212223 is 322212020112.

211020212223 is a `hidden beast` number, since 211 + 0 + 20 + 212 + 223 = 666.

It is not a de Polignac number, because 211020212223 - 2²¹ = 211018115071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211020212196 and 211020212205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211020212023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 316846833 + ... + 316847498.

It is an arithmetic number, because the mean of its divisors is an integer number (26087083334).

Almost surely, 2^211020212223 is an apocalyptic number.

211020212223 is a deficient number, since it is larger than the sum of its proper divisors (102024787785).

211020212223 is a wasteful number, since it uses less digits than its factorization.

211020212223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633694374 (or 633694371 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 211020212223 its reverse (322212020112), we get a palindrome (533232232335).

The spelling of 211020212223 in words is "two hundred eleven billion, twenty million, two hundred twelve thousand, two hundred twenty-three".