212162135 has 4 divisors (see below), whose sum is σ = 254594568. Its totient is φ = 169729704.

The previous prime is 212162131. The next prime is 212162149. The reversal of 212162135 is 531261212.

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 212162135 - 2² = 212162131 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 212162135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212162131) 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, 21216209 + ... + 21216218.

It is an arithmetic number, because the mean of its divisors is an integer number (63648642).

Almost surely, 2^212162135 is an apocalyptic number.

212162135 is a deficient number, since it is larger than the sum of its proper divisors (42432433).

212162135 is an equidigital number, since it uses as much as digits as its factorization.

212162135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42432432.

The product of its digits is 720, while the sum is 23.

The square root of 212162135 is about 14565.7864531923. The cubic root of 212162135 is about 596.4251645155.

The spelling of 212162135 in words is "two hundred twelve million, one hundred sixty-two thousand, one hundred thirty-five".