211201970999 has 2 divisors, whose sum is σ = 211201971000. Its totient is φ = 211201970998.

The previous prime is 211201970939. The next prime is 211201971053. The reversal of 211201970999 is 999079102112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211201970999 - 2¹² = 211201966903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211201970929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105600985499 + 105600985500.

It is an arithmetic number, because the mean of its divisors is an integer number (105600985500).

Almost surely, 2^211201970999 is an apocalyptic number.

211201970999 is a deficient number, since it is larger than the sum of its proper divisors (1).

211201970999 is an equidigital number, since it uses as much as digits as its factorization.

211201970999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708, while the sum is 50.

The spelling of 211201970999 in words is "two hundred eleven billion, two hundred one million, nine hundred seventy thousand, nine hundred ninety-nine".