221111010011 has 4 divisors (see below), whose sum is σ = 221114177400. Its totient is φ = 221107842624.

The previous prime is 221111009971. The next prime is 221111010079. The reversal of 221111010011 is 110010111122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 221111010011 - 2¹⁴ = 221110993627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221111009974 and 221111010001.

It is not an unprimeable number, because it can be changed into a prime (221111010091) 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 3 ways as a sum of consecutive naturals, for example, 1476566 + ... + 1619403.

It is an arithmetic number, because the mean of its divisors is an integer number (55278544350).

Almost surely, 2^221111010011 is an apocalyptic number.

221111010011 is a deficient number, since it is larger than the sum of its proper divisors (3167389).

221111010011 is an equidigital number, since it uses as much as digits as its factorization.

221111010011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3167388.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 221111010011 its reverse (110010111122), we get a palindrome (331121121133).

The spelling of 221111010011 in words is "two hundred twenty-one billion, one hundred eleven million, ten thousand, eleven".