221111020011 has 8 divisors (see below), whose sum is σ = 336931078144. Its totient is φ = 126349154280.

The previous prime is 221111020003. The next prime is 221111020021. The reversal of 221111020011 is 110020111122.

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

It is not a de Polignac number, because 221111020011 - 2³ = 221111020003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221111020021) 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, 5264548075 + ... + 5264548116.

It is an arithmetic number, because the mean of its divisors is an integer number (42116384768).

Almost surely, 2^221111020011 is an apocalyptic number.

221111020011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

221111020011 is a deficient number, since it is larger than the sum of its proper divisors (115820058133).

221111020011 is a wasteful number, since it uses less digits than its factorization.

221111020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10529096201.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 221111020011 its reverse (110020111122), we get a palindrome (331131131133).

The spelling of 221111020011 in words is "two hundred twenty-one billion, one hundred eleven million, twenty thousand, eleven".