212228142 has 16 divisors (see below), whose sum is σ = 485092992. Its totient is φ = 60636600.

The previous prime is 212228141. The next prime is 212228173. The reversal of 212228142 is 241822212.

212228142 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212228141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2526484 + ... + 2526567.

It is an arithmetic number, because the mean of its divisors is an integer number (30318312).

Almost surely, 2^212228142 is an apocalyptic number.

212228142 is an abundant number, since it is smaller than the sum of its proper divisors (272864850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212228142 is a wasteful number, since it uses less digits than its factorization.

212228142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5053063.

The product of its digits is 1024, while the sum is 24.

The square root of 212228142 is about 14568.0521004011. The cubic root of 212228142 is about 596.4870105400.

The spelling of 212228142 in words is "two hundred twelve million, two hundred twenty-eight thousand, one hundred forty-two".