212223355 has 8 divisors (see below), whose sum is σ = 254790864. Its totient is φ = 169696800.

The previous prime is 212223343. The next prime is 212223373. The reversal of 212223355 is 553322212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212223355 - 2⁷ = 212223227 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2640 + ... + 20770.

It is an arithmetic number, because the mean of its divisors is an integer number (31848858).

Almost surely, 2^212223355 is an apocalyptic number.

212223355 is a deficient number, since it is larger than the sum of its proper divisors (42567509).

212223355 is a wasteful number, since it uses less digits than its factorization.

212223355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20477.

The product of its digits is 3600, while the sum is 25.

The square root of 212223355 is about 14567.8878015998. The cubic root of 212223355 is about 596.4825257361.

Adding to 212223355 its reverse (553322212), we get a palindrome (765545567).

The spelling of 212223355 in words is "two hundred twelve million, two hundred twenty-three thousand, three hundred fifty-five".