21200111022019 has 2 divisors, whose sum is σ = 21200111022020. Its totient is φ = 21200111022018.

The previous prime is 21200111022011. The next prime is 21200111022037. The reversal of 21200111022019 is 91022011100212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21200111022019 - 2³ = 21200111022011 is a prime.

It is a super-2 number, since 2×21200111022019² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21200111022011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600055511009 + 10600055511010.

It is an arithmetic number, because the mean of its divisors is an integer number (10600055511010).

Almost surely, 2^{21200111022019} is an apocalyptic number.

21200111022019 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200111022019 is an equidigital number, since it uses as much as digits as its factorization.

21200111022019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 21200111022019 in words is "twenty-one trillion, two hundred billion, one hundred eleven million, twenty-two thousand, nineteen".