212183622649 has 2 divisors, whose sum is σ = 212183622650. Its totient is φ = 212183622648.

The previous prime is 212183622601. The next prime is 212183622689. The reversal of 212183622649 is 946226381212.

212183622649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166170369600 + 46013253049 = 407640^2 + 214507^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212183622649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212183622599 and 212183622608.

It is not a weakly prime, because it can be changed into another prime (212183622689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106091811324 + 106091811325.

It is an arithmetic number, because the mean of its divisors is an integer number (106091811325).

Almost surely, 2^212183622649 is an apocalyptic number.

It is an amenable number.

212183622649 is a deficient number, since it is larger than the sum of its proper divisors (1).

212183622649 is an equidigital number, since it uses as much as digits as its factorization.

212183622649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 46.

The spelling of 212183622649 in words is "two hundred twelve billion, one hundred eighty-three million, six hundred twenty-two thousand, six hundred forty-nine".