212223142 has 8 divisors (see below), whose sum is σ = 325107936. Its totient is φ = 103853832.

The previous prime is 212223133. The next prime is 212223149. The reversal of 212223142 is 241322212.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212223149) 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, 1128753 + ... + 1128940.

It is an arithmetic number, because the mean of its divisors is an integer number (40638492).

Almost surely, 2^212223142 is an apocalyptic number.

212223142 is a deficient number, since it is larger than the sum of its proper divisors (112884794).

212223142 is a wasteful number, since it uses less digits than its factorization.

212223142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257742.

The product of its digits is 384, while the sum is 19.

The square root of 212223142 is about 14567.8804909980. The cubic root of 212223142 is about 596.4823261809.

Adding to 212223142 its reverse (241322212), we get a palindrome (453545354).

The spelling of 212223142 in words is "two hundred twelve million, two hundred twenty-three thousand, one hundred forty-two".