212275239 has 32 divisors (see below), whose sum is σ = 329011200. Its totient is φ = 120382560.

The previous prime is 212275237. The next prime is 212275249. The reversal of 212275239 is 932572212.

It is not a de Polignac number, because 212275239 - 2¹ = 212275237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212275237) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50002 + ... + 54080.

It is an arithmetic number, because the mean of its divisors is an integer number (10281600).

Almost surely, 2^212275239 is an apocalyptic number.

212275239 is a deficient number, since it is larger than the sum of its proper divisors (116735961).

212275239 is a wasteful number, since it uses less digits than its factorization.

212275239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4195.

The product of its digits is 15120, while the sum is 33.

The square root of 212275239 is about 14569.6684588223. The cubic root of 212275239 is about 596.5311307820.

The spelling of 212275239 in words is "two hundred twelve million, two hundred seventy-five thousand, two hundred thirty-nine".