21222211004241 has 16 divisors (see below), whose sum is σ = 30473007504576. Its totient is φ = 13059783953856.

The previous prime is 21222211004227. The next prime is 21222211004243. The reversal of 21222211004241 is 14240011222212.

It is not a de Polignac number, because 21222211004241 - 2⁵ = 21222211004209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21222211004243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18839286 + ... + 19933968.

It is an arithmetic number, because the mean of its divisors is an integer number (1904562969036).

Almost surely, 2^{21222211004241} is an apocalyptic number.

It is an amenable number.

21222211004241 is a deficient number, since it is larger than the sum of its proper divisors (9250796500335).

21222211004241 is a wasteful number, since it uses less digits than its factorization.

21222211004241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591792.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 21222211004241 its reverse (14240011222212), we get a palindrome (35462222226453).

The spelling of 21222211004241 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred eleven million, four thousand, two hundred forty-one".