21102222001201 has 16 divisors (see below), whose sum is σ = 23309874849600. Its totient is φ = 18943782984000.

The previous prime is 21102222001181. The next prime is 21102222001253. The reversal of 21102222001201 is 10210022220112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21102222001201 - 2²⁵ = 21102188446769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21102222001271) 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, 24636846 + ... + 25478983.

It is an arithmetic number, because the mean of its divisors is an integer number (1456867178100).

Almost surely, 2^{21102222001201} is an apocalyptic number.

It is an amenable number.

21102222001201 is a deficient number, since it is larger than the sum of its proper divisors (2207652848399).

21102222001201 is a wasteful number, since it uses less digits than its factorization.

21102222001201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50116320.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21102222001201 its reverse (10210022220112), we get a palindrome (31312244221313).

The spelling of 21102222001201 in words is "twenty-one trillion, one hundred two billion, two hundred twenty-two million, one thousand, two hundred one".