111020221111011 has 4 divisors (see below), whose sum is σ = 148026961481352. Its totient is φ = 74013480740672.

The previous prime is 111020221111001. The next prime is 111020221111201. The reversal of 111020221111011 is 110111122020111.

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 111020221111011 - 2⁶ = 111020221110947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111020221111001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18503370185166 + ... + 18503370185171.

It is an arithmetic number, because the mean of its divisors is an integer number (37006740370338).

Almost surely, 2^{111020221111011} is an apocalyptic number.

111020221111011 is a deficient number, since it is larger than the sum of its proper divisors (37006740370341).

111020221111011 is an equidigital number, since it uses as much as digits as its factorization.

111020221111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37006740370340.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 111020221111011 its reverse (110111122020111), we get a palindrome (221131343131122).

The spelling of 111020221111011 in words is "one hundred eleven trillion, twenty billion, two hundred twenty-one million, one hundred eleven thousand, eleven".