212350505 has 4 divisors (see below), whose sum is σ = 254820612. Its totient is φ = 169880400.

The previous prime is 212350493. The next prime is 212350543. The reversal of 212350505 is 505053212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 51897616 + 160452889 = 7204^2 + 12667^2 .

It is not a de Polignac number, because 212350505 - 2⁸ = 212350249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21235046 + ... + 21235055.

It is an arithmetic number, because the mean of its divisors is an integer number (63705153).

Almost surely, 2^212350505 is an apocalyptic number.

It is an amenable number.

212350505 is a deficient number, since it is larger than the sum of its proper divisors (42470107).

212350505 is an equidigital number, since it uses as much as digits as its factorization.

212350505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42470106.

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 212350505 is about 14572.2511987682. The cubic root of 212350505 is about 596.6016260610.

The spelling of 212350505 in words is "two hundred twelve million, three hundred fifty thousand, five hundred five".