212000222109989 has 2 divisors, whose sum is σ = 212000222109990. Its totient is φ = 212000222109988.

The previous prime is 212000222109961. The next prime is 212000222110063. The reversal of 212000222109989 is 989901222000212.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211747170856225 + 253051253764 = 14551535^2 + 503042^2 .

It is a cyclic number.

It is not a de Polignac number, because 212000222109989 - 2²⁸ = 211999953674533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212000222109289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106000111054994 + 106000111054995.

It is an arithmetic number, because the mean of its divisors is an integer number (106000111054995).

Almost surely, 2^{212000222109989} is an apocalyptic number.

It is an amenable number.

212000222109989 is a deficient number, since it is larger than the sum of its proper divisors (1).

212000222109989 is an equidigital number, since it uses as much as digits as its factorization.

212000222109989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 47.

The spelling of 212000222109989 in words is "two hundred twelve trillion, two hundred twenty-two million, one hundred nine thousand, nine hundred eighty-nine".