212101210999 has 2 divisors, whose sum is σ = 212101211000. Its totient is φ = 212101210998.

The previous prime is 212101210933. The next prime is 212101211099. The reversal of 212101210999 is 999012101212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212101210999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212101210499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106050605499 + 106050605500.

It is an arithmetic number, because the mean of its divisors is an integer number (106050605500).

Almost surely, 2^212101210999 is an apocalyptic number.

212101210999 is a deficient number, since it is larger than the sum of its proper divisors (1).

212101210999 is an equidigital number, since it uses as much as digits as its factorization.

212101210999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 37.

The spelling of 212101210999 in words is "two hundred twelve billion, one hundred one million, two hundred ten thousand, nine hundred ninety-nine".