212135503 has 8 divisors (see below), whose sum is σ = 228422160. Its totient is φ = 196272000.

The previous prime is 212135501. The next prime is 212135507. The reversal of 212135503 is 305531212.

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 212135503 - 2¹ = 212135501 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 (212135501) 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, 104748 + ... + 106753.

It is an arithmetic number, because the mean of its divisors is an integer number (28552770).

Almost surely, 2^212135503 is an apocalyptic number.

212135503 is a deficient number, since it is larger than the sum of its proper divisors (16286657).

212135503 is a wasteful number, since it uses less digits than its factorization.

212135503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211577.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 212135503 is about 14564.8722273833. The cubic root of 212135503 is about 596.4002077222.

Adding to 212135503 its reverse (305531212), we get a palindrome (517666715).

The spelling of 212135503 in words is "two hundred twelve million, one hundred thirty-five thousand, five hundred three".