212223356 has 6 divisors (see below), whose sum is σ = 371390880. Its totient is φ = 106111676.

The previous prime is 212223343. The next prime is 212223373. The reversal of 212223356 is 653322212.

212223356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26527916 + ... + 26527923.

It is an arithmetic number, because the mean of its divisors is an integer number (61898480).

Almost surely, 2^212223356 is an apocalyptic number.

It is an amenable number.

212223356 is a deficient number, since it is larger than the sum of its proper divisors (159167524).

212223356 is a wasteful number, since it uses less digits than its factorization.

212223356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53055843 (or 53055841 counting only the distinct ones).

The product of its digits is 4320, while the sum is 26.

The square root of 212223356 is about 14567.8878359219. The cubic root of 212223356 is about 596.4825266730.

Adding to 212223356 its reverse (653322212), we get a palindrome (865545568).

The spelling of 212223356 in words is "two hundred twelve million, two hundred twenty-three thousand, three hundred fifty-six".