212210757 has 12 divisors (see below), whose sum is σ = 334392864. Its totient is φ = 128612520.

The previous prime is 212210749. The next prime is 212210771. The reversal of 212210757 is 757012212.

It is not a de Polignac number, because 212210757 - 2³ = 212210749 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 212210757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212210057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1071673 + ... + 1071870.

It is an arithmetic number, because the mean of its divisors is an integer number (27866072).

Almost surely, 2^212210757 is an apocalyptic number.

It is an amenable number.

212210757 is a deficient number, since it is larger than the sum of its proper divisors (122182107).

212210757 is a wasteful number, since it uses less digits than its factorization.

212210757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143560 (or 2143557 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 212210757 is about 14567.4554058010. The cubic root of 212210757 is about 596.4707227066.

Adding to 212210757 its reverse (757012212), we get a palindrome (969222969).

The spelling of 212210757 in words is "two hundred twelve million, two hundred ten thousand, seven hundred fifty-seven".