212680535929 has 9 divisors (see below), whose sum is σ = 222340647109. Its totient is φ = 203423410300.

The previous prime is 212680535917. The next prime is 212680535933. The reversal of 212680535929 is 929535086212.

The square root of 212680535929 is 461173.

It is a perfect power (a square), and thus also a powerful number.

It is a de Polignac number, because none of the positive numbers 2^k-212680535929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212680535959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10596954 + ... + 10617004.

Almost surely, 2^212680535929 is an apocalyptic number.

212680535929 is the 461173-rd square number.

212680535929 is the 230587-th centered octagonal number.

It is an amenable number.

212680535929 is a deficient number, since it is larger than the sum of its proper divisors (9660111180).

212680535929 is an frugal number, since it uses more digits than its factorization.

212680535929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40148 (or 20074 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 52.

The spelling of 212680535929 in words is "two hundred twelve billion, six hundred eighty million, five hundred thirty-five thousand, nine hundred twenty-nine".