21102220220219 has 2 divisors, whose sum is σ = 21102220220220. Its totient is φ = 21102220220218.

The previous prime is 21102220220201. The next prime is 21102220220303. The reversal of 21102220220219 is 91202202220112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21102220220219 - 2¹⁶ = 21102220154683 is a prime.

It is a super-2 number, since 2×21102220220219² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21102220223219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551110110109 + 10551110110110.

It is an arithmetic number, because the mean of its divisors is an integer number (10551110110110).

Almost surely, 2^{21102220220219} is an apocalyptic number.

21102220220219 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102220220219 is an equidigital number, since it uses as much as digits as its factorization.

21102220220219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 21102220220219 in words is "twenty-one trillion, one hundred two billion, two hundred twenty million, two hundred twenty thousand, two hundred nineteen".