212040223 has 2 divisors, whose sum is σ = 212040224. Its totient is φ = 212040222.

The previous prime is 212040221. The next prime is 212040263. The reversal of 212040223 is 322040212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212040223 - 2¹ = 212040221 is a prime.

It is a super-2 number, since 2×212040223² = 89922112339779458, which contains 22 as substring.

Together with 212040221, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 212040197 and 212040206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212040221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106020111 + 106020112.

It is an arithmetic number, because the mean of its divisors is an integer number (106020112).

Almost surely, 2^212040223 is an apocalyptic number.

212040223 is a deficient number, since it is larger than the sum of its proper divisors (1).

212040223 is an equidigital number, since it uses as much as digits as its factorization.

212040223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 212040223 is about 14561.6009765410. The cubic root of 212040223 is about 596.3109039192.

Adding to 212040223 its reverse (322040212), we get a palindrome (534080435).

The spelling of 212040223 in words is "two hundred twelve million, forty thousand, two hundred twenty-three".