221002122211211 has 16 divisors (see below), whose sum is σ = 242088738506208. Its totient is φ = 200083059648000.

The previous prime is 221002122211193. The next prime is 221002122211291. The reversal of 221002122211211 is 112112221200122.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221002122211211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221002122211291) 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, 38162696 + ... + 43570581.

It is an arithmetic number, because the mean of its divisors is an integer number (15130546156638).

Almost surely, 2^{221002122211211} is an apocalyptic number.

221002122211211 is a deficient number, since it is larger than the sum of its proper divisors (21086616294997).

221002122211211 is a wasteful number, since it uses less digits than its factorization.

221002122211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81734302.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 221002122211211 its reverse (112112221200122), we get a palindrome (333114343411333).

The spelling of 221002122211211 in words is "two hundred twenty-one trillion, two billion, one hundred twenty-two million, two hundred eleven thousand, two hundred eleven".