21222202212201 has 16 divisors (see below), whose sum is σ = 28310063430528. Its totient is φ = 14141238384000.

The previous prime is 21222202212179. The next prime is 21222202212259. The reversal of 21222202212201 is 10221220222212.

It is not a de Polignac number, because 21222202212201 - 2⁶ = 21222202212137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21222202712201) 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, 274323676 + ... + 274401026.

It is an arithmetic number, because the mean of its divisors is an integer number (1769378964408).

Almost surely, 2^{21222202212201} is an apocalyptic number.

It is an amenable number.

21222202212201 is a deficient number, since it is larger than the sum of its proper divisors (7087861218327).

21222202212201 is a wasteful number, since it uses less digits than its factorization.

21222202212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120752.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 21222202212201 its reverse (10221220222212), we get a palindrome (31443422434413).

The spelling of 21222202212201 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred two million, two hundred twelve thousand, two hundred one".