221200001020011 has 64 divisors (see below), whose sum is σ = 339583318244352. Its totient is φ = 126866705559552.

The previous prime is 221200001019983. The next prime is 221200001020067. The reversal of 221200001020011 is 110020100002122.

It is not a de Polignac number, because 221200001020011 - 2⁶ = 221200001019947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221200001020091) 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 63 ways as a sum of consecutive naturals, for example, 2130086856 + ... + 2130190698.

It is an arithmetic number, because the mean of its divisors is an integer number (5305989347568).

Almost surely, 2^{221200001020011} is an apocalyptic number.

221200001020011 is a deficient number, since it is larger than the sum of its proper divisors (118383317224341).

221200001020011 is a wasteful number, since it uses less digits than its factorization.

221200001020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135172.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221200001020011 its reverse (110020100002122), we get a palindrome (331220101022133).

The spelling of 221200001020011 in words is "two hundred twenty-one trillion, two hundred billion, one million, twenty thousand, eleven".