212222199977 has 2 divisors, whose sum is σ = 212222199978. Its totient is φ = 212222199976.

The previous prime is 212222199947. The next prime is 212222200007. The reversal of 212222199977 is 779991222212.

212222199977 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (212222199947) and next prime (212222200007).

It can be written as a sum of positive squares in only one way, i.e., 166810163776 + 45412036201 = 408424^2 + 213101^2 .

It is a cyclic number.

It is not a de Polignac number, because 212222199977 - 2¹⁰ = 212222198953 is a prime.

It is not a weakly prime, because it can be changed into another prime (212222199947) 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, 106111099988 + 106111099989.

It is an arithmetic number, because the mean of its divisors is an integer number (106111099989).

Almost surely, 2^212222199977 is an apocalyptic number.

It is an amenable number.

212222199977 is a deficient number, since it is larger than the sum of its proper divisors (1).

212222199977 is an equidigital number, since it uses as much as digits as its factorization.

212222199977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 53.

The spelling of 212222199977 in words is "two hundred twelve billion, two hundred twenty-two million, one hundred ninety-nine thousand, nine hundred seventy-seven".