212134751 has 2 divisors, whose sum is σ = 212134752. Its totient is φ = 212134750.

The previous prime is 212134733. The next prime is 212134777. The reversal of 212134751 is 157431212.

It is an a-pointer prime, because the next prime (212134777) can be obtained adding 212134751 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212134751 - 2²⁶ = 145025887 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212134751.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212133751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106067375 + 106067376.

It is an arithmetic number, because the mean of its divisors is an integer number (106067376).

Almost surely, 2^212134751 is an apocalyptic number.

212134751 is a deficient number, since it is larger than the sum of its proper divisors (1).

212134751 is an equidigital number, since it uses as much as digits as its factorization.

212134751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 26.

The square root of 212134751 is about 14564.8464118232. The cubic root of 212134751 is about 596.3995029942.

Adding to 212134751 its reverse (157431212), we get a palindrome (369565963).

The spelling of 212134751 in words is "two hundred twelve million, one hundred thirty-four thousand, seven hundred fifty-one".