221002211201201 has 16 divisors (see below), whose sum is σ = 236411073331200. Its totient is φ = 205989795515088.

The previous prime is 221002211201141. The next prime is 221002211201221. The reversal of 221002211201201 is 102102112200122.

It is a cyclic number.

It is not a de Polignac number, because 221002211201201 - 2³⁸ = 220727333294257 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221002211201201.

It is not an unprimeable number, because it can be changed into a prime (221002211201221) 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, 259710641 + ... + 260560206.

It is an arithmetic number, because the mean of its divisors is an integer number (14775692083200).

Almost surely, 2^{221002211201201} is an apocalyptic number.

It is an amenable number.

221002211201201 is a deficient number, since it is larger than the sum of its proper divisors (15408862129999).

221002211201201 is a wasteful number, since it uses less digits than its factorization.

221002211201201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520271228.

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

Adding to 221002211201201 its reverse (102102112200122), we get a palindrome (323104323401323).

The spelling of 221002211201201 in words is "two hundred twenty-one trillion, two billion, two hundred eleven million, two hundred one thousand, two hundred one".