21222110201201 has 16 divisors (see below), whose sum is σ = 26119656200064. Its totient is φ = 16791032761344.

The previous prime is 21222110201197. The next prime is 21222110201207. The reversal of 21222110201201 is 10210201122212.

It is a cyclic number.

It is not a de Polignac number, because 21222110201201 - 2² = 21222110201197 is a prime.

It is a super-2 number, since 2×21222110201201² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21222110201201.

It is not an unprimeable number, because it can be changed into a prime (21222110201207) 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, 21288746 + ... + 22263308.

It is an arithmetic number, because the mean of its divisors is an integer number (1632478512504).

Almost surely, 2^{21222110201201} is an apocalyptic number.

It is an amenable number.

21222110201201 is a deficient number, since it is larger than the sum of its proper divisors (4897545998863).

21222110201201 is a wasteful number, since it uses less digits than its factorization.

21222110201201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1213880.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21222110201201 its reverse (10210201122212), we get a palindrome (31432311323413).

The spelling of 21222110201201 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred ten million, two hundred one thousand, two hundred one".