221100111021011 has 8 divisors (see below), whose sum is σ = 225088924604064. Its totient is φ = 217123046521920.

The previous prime is 221100111020981. The next prime is 221100111021037. The reversal of 221100111021011 is 110120111001122.

221100111021011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221100111021011 - 2¹⁰ = 221100111019987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221100111041011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2937233015 + ... + 2937308288.

It is an arithmetic number, because the mean of its divisors is an integer number (28136115575508).

Almost surely, 2^{221100111021011} is an apocalyptic number.

221100111021011 is a deficient number, since it is larger than the sum of its proper divisors (3988813583053).

221100111021011 is an equidigital number, since it uses as much as digits as its factorization.

221100111021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5874541981.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 221100111021011 its reverse (110120111001122), we get a palindrome (331220222022133).

It can be divided in two parts, 221100 and 111021011, that added together give a palindrome (111242111).

The spelling of 221100111021011 in words is "two hundred twenty-one trillion, one hundred billion, one hundred eleven million, twenty-one thousand, eleven".