212811055 has 8 divisors (see below), whose sum is σ = 257716800. Its totient is φ = 168686496.

The previous prime is 212811043. The next prime is 212811061. The reversal of 212811055 is 550118212.

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 212811055 - 2¹¹ = 212809007 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194695 + ... + 195784.

It is an arithmetic number, because the mean of its divisors is an integer number (32214600).

Almost surely, 2^212811055 is an apocalyptic number.

212811055 is a deficient number, since it is larger than the sum of its proper divisors (44905745).

212811055 is a wasteful number, since it uses less digits than its factorization.

212811055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390593.

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 212811055 is about 14588.0449341233. The cubic root of 212811055 is about 597.0326217857.

Adding to 212811055 its reverse (550118212), we get a palindrome (762929267).

The spelling of 212811055 in words is "two hundred twelve million, eight hundred eleven thousand, fifty-five".