21222021012219 has 12 divisors (see below), whose sum is σ = 30661828425592. Its totient is φ = 14144414896800.

The previous prime is 21222021012217. The next prime is 21222021012239. The reversal of 21222021012219 is 91221012022212.

21222021012219 is a `hidden beast` number, since 2 + 1 + 2 + 220 + 210 + 1 + 221 + 9 = 666.

It is not a de Polignac number, because 21222021012219 - 2¹ = 21222021012217 is a prime.

It is a super-2 number, since 2×21222021012219² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21222021012192 and 21222021012201.

It is not an unprimeable number, because it can be changed into a prime (21222021012217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 299888602 + ... + 299959359.

Almost surely, 2^{21222021012219} is an apocalyptic number.

21222021012219 is a deficient number, since it is larger than the sum of its proper divisors (9439807413373).

21222021012219 is a wasteful number, since it uses less digits than its factorization.

21222021012219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599851898 (or 599851895 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The spelling of 21222021012219 in words is "twenty-one trillion, two hundred twenty-two billion, twenty-one million, twelve thousand, two hundred nineteen".