212001120120989 has 2 divisors, whose sum is σ = 212001120120990. Its totient is φ = 212001120120988.

The previous prime is 212001120120973. The next prime is 212001120121051. The reversal of 212001120120989 is 989021021100212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188898360640900 + 23102759480089 = 13744030^2 + 4806533^2 .

It is a cyclic number.

It is not a de Polignac number, because 212001120120989 - 2⁴ = 212001120120973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212001120120929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106000560060494 + 106000560060495.

It is an arithmetic number, because the mean of its divisors is an integer number (106000560060495).

Almost surely, 2^{212001120120989} is an apocalyptic number.

It is an amenable number.

212001120120989 is a deficient number, since it is larger than the sum of its proper divisors (1).

212001120120989 is an equidigital number, since it uses as much as digits as its factorization.

212001120120989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 38.

The spelling of 212001120120989 in words is "two hundred twelve trillion, one billion, one hundred twenty million, one hundred twenty thousand, nine hundred eighty-nine".