21522014219 has 2 divisors, whose sum is σ = 21522014220. Its totient is φ = 21522014218.

The previous prime is 21522014197. The next prime is 21522014243. The reversal of 21522014219 is 91241022512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21522014219 - 2³² = 17227046923 is a prime.

It is a super-2 number, since 2×21522014219² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21522014191 and 21522014200.

It is not a weakly prime, because it can be changed into another prime (21522014299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10761007109 + 10761007110.

It is an arithmetic number, because the mean of its divisors is an integer number (10761007110).

Almost surely, 2^21522014219 is an apocalyptic number.

21522014219 is a deficient number, since it is larger than the sum of its proper divisors (1).

21522014219 is an equidigital number, since it uses as much as digits as its factorization.

21522014219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 29.

The spelling of 21522014219 in words is "twenty-one billion, five hundred twenty-two million, fourteen thousand, two hundred nineteen".