211231100219 has 2 divisors, whose sum is σ = 211231100220. Its totient is φ = 211231100218.

The previous prime is 211231100209. The next prime is 211231100233. The reversal of 211231100219 is 912001132112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211231100219 is a prime.

It is a super-2 number, since 2×211231100219² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211231100194 and 211231100203.

It is not a weakly prime, because it can be changed into another prime (211231100209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105615550109 + 105615550110.

It is an arithmetic number, because the mean of its divisors is an integer number (105615550110).

Almost surely, 2^211231100219 is an apocalyptic number.

211231100219 is a deficient number, since it is larger than the sum of its proper divisors (1).

211231100219 is an equidigital number, since it uses as much as digits as its factorization.

211231100219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The spelling of 211231100219 in words is "two hundred eleven billion, two hundred thirty-one million, one hundred thousand, two hundred nineteen".