212020009999997 has 2 divisors, whose sum is σ = 212020009999998. Its totient is φ = 212020009999996.

The previous prime is 212020009999969. The next prime is 212020010000173. The reversal of 212020009999997 is 799999900020212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158661382519396 + 53358627480601 = 12596086^2 + 7304699^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212020009999997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212020009999397) 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, 106010004999998 + 106010004999999.

It is an arithmetic number, because the mean of its divisors is an integer number (106010004999999).

Almost surely, 2^{212020009999997} is an apocalyptic number.

It is an amenable number.

212020009999997 is a deficient number, since it is larger than the sum of its proper divisors (1).

212020009999997 is an equidigital number, since it uses as much as digits as its factorization.

212020009999997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29760696, while the sum is 68.

The spelling of 212020009999997 in words is "two hundred twelve trillion, twenty billion, nine million, nine hundred ninety-nine thousand, nine hundred ninety-seven".