212229995 has 4 divisors (see below), whose sum is σ = 254676000. Its totient is φ = 169783992.

The previous prime is 212229991. The next prime is 212230009. The reversal of 212229995 is 599922212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 212229995 - 2² = 212229991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (212229991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21222995 + ... + 21223004.

It is an arithmetic number, because the mean of its divisors is an integer number (63669000).

Almost surely, 2^212229995 is an apocalyptic number.

212229995 is a deficient number, since it is larger than the sum of its proper divisors (42446005).

212229995 is an equidigital number, since it uses as much as digits as its factorization.

212229995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42446004.

The product of its digits is 58320, while the sum is 41.

The square root of 212229995 is about 14568.1156983324. The cubic root of 212229995 is about 596.4887465448.

The spelling of 212229995 in words is "two hundred twelve million, two hundred twenty-nine thousand, nine hundred ninety-five".