221211001102 has 32 divisors (see below), whose sum is σ = 408413601792. Its totient is φ = 87506888544.

The previous prime is 221211001097. The next prime is 221211001133. The reversal of 221211001102 is 201100112122.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5009773 + ... + 5053735.

It is an arithmetic number, because the mean of its divisors is an integer number (12762925056).

Almost surely, 2^221211001102 is an apocalyptic number.

221211001102 is a deficient number, since it is larger than the sum of its proper divisors (187202600690).

221211001102 is a wasteful number, since it uses less digits than its factorization.

221211001102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71632.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221211001102 its reverse (201100112122), we get a palindrome (422311113224).

The spelling of 221211001102 in words is "two hundred twenty-one billion, two hundred eleven million, one thousand, one hundred two".