211122021211819 has 2 divisors, whose sum is σ = 211122021211820. Its totient is φ = 211122021211818.

The previous prime is 211122021211817. The next prime is 211122021211831. The reversal of 211122021211819 is 918112120221112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211122021211819 - 2¹ = 211122021211817 is a prime.

It is a super-2 number, since 2×211122021211819² (a number of 29 digits) contains 22 as substring.

Together with 211122021211817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (211122021211817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105561010605909 + 105561010605910.

It is an arithmetic number, because the mean of its divisors is an integer number (105561010605910).

Almost surely, 2^{211122021211819} is an apocalyptic number.

211122021211819 is a deficient number, since it is larger than the sum of its proper divisors (1).

211122021211819 is an equidigital number, since it uses as much as digits as its factorization.

211122021211819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 34.

The spelling of 211122021211819 in words is "two hundred eleven trillion, one hundred twenty-two billion, twenty-one million, two hundred eleven thousand, eight hundred nineteen".