212770745400971 has 4 divisors (see below), whose sum is σ = 212778087669000. Its totient is φ = 212763403132944.

The previous prime is 212770745400949. The next prime is 212770745400973. The reversal of 212770745400971 is 179004547077212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212770745400971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212770745400973) 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 3 ways as a sum of consecutive naturals, for example, 3671090546 + ... + 3671148503.

It is an arithmetic number, because the mean of its divisors is an integer number (53194521917250).

Almost surely, 2^{212770745400971} is an apocalyptic number.

212770745400971 is a deficient number, since it is larger than the sum of its proper divisors (7342268029).

212770745400971 is an equidigital number, since it uses as much as digits as its factorization.

212770745400971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7342268028.

The product of its (nonzero) digits is 6914880, while the sum is 56.

The spelling of 212770745400971 in words is "two hundred twelve trillion, seven hundred seventy billion, seven hundred forty-five million, four hundred thousand, nine hundred seventy-one".