21222122102201 has 16 divisors (see below), whose sum is σ = 22578508814400. Its totient is φ = 19912212454848.

The previous prime is 21222122102191. The next prime is 21222122102213. The reversal of 21222122102201 is 10220122122212.

It is a cyclic number.

It is not a de Polignac number, because 21222122102201 - 2²² = 21222117907897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21222122104201) 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, 42948611 + ... + 43439928.

It is an arithmetic number, because the mean of its divisors is an integer number (1411156800900).

Almost surely, 2^{21222122102201} is an apocalyptic number.

It is an amenable number.

21222122102201 is a deficient number, since it is larger than the sum of its proper divisors (1356386712199).

21222122102201 is a wasteful number, since it uses less digits than its factorization.

21222122102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86388808.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21222122102201 its reverse (10220122122212), we get a palindrome (31442244224413).

The spelling of 21222122102201 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred twenty-two million, one hundred two thousand, two hundred one".