212444534987 has 2 divisors, whose sum is σ = 212444534988. Its totient is φ = 212444534986.

The previous prime is 212444534971. The next prime is 212444535011. The reversal of 212444534987 is 789435444212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212444534987 - 2⁴ = 212444534971 is a prime.

It is not a weakly prime, because it can be changed into another prime (212444524987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106222267493 + 106222267494.

It is an arithmetic number, because the mean of its divisors is an integer number (106222267494).

Almost surely, 2^212444534987 is an apocalyptic number.

212444534987 is a deficient number, since it is larger than the sum of its proper divisors (1).

212444534987 is an equidigital number, since it uses as much as digits as its factorization.

212444534987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7741440, while the sum is 53.

The spelling of 212444534987 in words is "two hundred twelve billion, four hundred forty-four million, five hundred thirty-four thousand, nine hundred eighty-seven".