212027807 has 4 divisors (see below), whose sum is σ = 212482296. Its totient is φ = 211573320.

The previous prime is 212027789. The next prime is 212027813. The reversal of 212027807 is 708720212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212027807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212027807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212027867) 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, 226544 + ... + 227477.

It is an arithmetic number, because the mean of its divisors is an integer number (53120574).

Almost surely, 2^212027807 is an apocalyptic number.

212027807 is a deficient number, since it is larger than the sum of its proper divisors (454489).

212027807 is an equidigital number, since it uses as much as digits as its factorization.

212027807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454488.

The product of its (nonzero) digits is 3136, while the sum is 29.

The square root of 212027807 is about 14561.1746435513. The cubic root of 212027807 is about 596.2992647113.

The spelling of 212027807 in words is "two hundred twelve million, twenty-seven thousand, eight hundred seven".