212612633 has 8 divisors (see below), whose sum is σ = 216466056. Its totient is φ = 208771200.

The previous prime is 212612623. The next prime is 212612639. The reversal of 212612633 is 336216212.

It can be written as a sum of positive squares in 4 ways, for example, as 12475024 + 200137609 = 3532^2 + 14147^2 .

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 212612633 - 2⁸ = 212612377 is a prime.

It is a super-2 number, since 2×212612633² = 90408263422385378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212612639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37685 + ... + 42957.

It is an arithmetic number, because the mean of its divisors is an integer number (27058257).

Almost surely, 2^212612633 is an apocalyptic number.

It is an amenable number.

212612633 is a deficient number, since it is larger than the sum of its proper divisors (3853423).

212612633 is an equidigital number, since it uses as much as digits as its factorization.

212612633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5995.

The product of its digits is 2592, while the sum is 26.

The square root of 212612633 is about 14581.2425053560. The cubic root of 212612633 is about 596.8470091787.

Adding to 212612633 its reverse (336216212), we get a palindrome (548828845).

The spelling of 212612633 in words is "two hundred twelve million, six hundred twelve thousand, six hundred thirty-three".