212145277 has 8 divisors (see below), whose sum is σ = 213796800. Its totient is φ = 210498624.

The previous prime is 212145259. The next prime is 212145281. The reversal of 212145277 is 772541212.

212145277 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212145277 - 2⁷ = 212145149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212145217) 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, 167874 + ... + 169132.

It is an arithmetic number, because the mean of its divisors is an integer number (26724600).

Almost surely, 2^212145277 is an apocalyptic number.

It is an amenable number.

212145277 is a deficient number, since it is larger than the sum of its proper divisors (1651523).

212145277 is a wasteful number, since it uses less digits than its factorization.

212145277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435.

The product of its digits is 7840, while the sum is 31.

The square root of 212145277 is about 14565.2077568430. The cubic root of 212145277 is about 596.4093671604.

Adding to 212145277 its reverse (772541212), we get a palindrome (984686489).

The spelling of 212145277 in words is "two hundred twelve million, one hundred forty-five thousand, two hundred seventy-seven".