221200122211201 has 16 divisors (see below), whose sum is σ = 256362718003200. Its totient is φ = 186928212940560.

The previous prime is 221200122211193. The next prime is 221200122211231. The reversal of 221200122211201 is 102112221002122.

It is not a de Polignac number, because 221200122211201 - 2³ = 221200122211193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221200122211231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64105200 + ... + 67467598.

It is an arithmetic number, because the mean of its divisors is an integer number (16022669875200).

Almost surely, 2^{221200122211201} is an apocalyptic number.

It is an amenable number.

221200122211201 is a deficient number, since it is larger than the sum of its proper divisors (35162595791999).

221200122211201 is a wasteful number, since it uses less digits than its factorization.

221200122211201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3494844.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221200122211201 its reverse (102112221002122), we get a palindrome (323312343213323).

The spelling of 221200122211201 in words is "two hundred twenty-one trillion, two hundred billion, one hundred twenty-two million, two hundred eleven thousand, two hundred one".