212225939 has 8 divisors (see below), whose sum is σ = 217434672. Its totient is φ = 207061920.

The previous prime is 212225927. The next prime is 212225971. The reversal of 212225939 is 939522212.

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

It is a cyclic number.

It is not a de Polignac number, because 212225939 - 2¹² = 212221843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212225899 and 212225908.

It is not an unprimeable number, because it can be changed into a prime (212225989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1469 + ... + 20654.

It is an arithmetic number, because the mean of its divisors is an integer number (27179334).

Almost surely, 2^212225939 is an apocalyptic number.

212225939 is a deficient number, since it is larger than the sum of its proper divisors (5208733).

212225939 is a wasteful number, since it uses less digits than its factorization.

212225939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22357.

The product of its digits is 19440, while the sum is 35.

The square root of 212225939 is about 14567.9764895472. The cubic root of 212225939 is about 596.4849466205.

The spelling of 212225939 in words is "two hundred twelve million, two hundred twenty-five thousand, nine hundred thirty-nine".