211111220219 has 2 divisors, whose sum is σ = 211111220220. Its totient is φ = 211111220218.

The previous prime is 211111220171. The next prime is 211111220239. The reversal of 211111220219 is 912022111112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211111220219 - 2¹² = 211111216123 is a prime.

It is a super-2 number, since 2×211111220219² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211111220194 and 211111220203.

It is not a weakly prime, because it can be changed into another prime (211111220239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555610109 + 105555610110.

It is an arithmetic number, because the mean of its divisors is an integer number (105555610110).

Almost surely, 2^211111220219 is an apocalyptic number.

211111220219 is a deficient number, since it is larger than the sum of its proper divisors (1).

211111220219 is an equidigital number, since it uses as much as digits as its factorization.

211111220219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 211111220219 in words is "two hundred eleven billion, one hundred eleven million, two hundred twenty thousand, two hundred nineteen".