111122221020111 has 48 divisors (see below), whose sum is σ = 184403901566976. Its totient is φ = 63165141422208.

The previous prime is 111122221020049. The next prime is 111122221020119. The reversal of 111122221020111 is 111020122221111.

It is a happy number.

111122221020111 is a `hidden beast` number, since 11 + 11 + 222 + 210 + 201 + 11 = 666.

It is not a de Polignac number, because 111122221020111 - 2¹⁵ = 111122220987343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111122221020119) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15270691 + ... + 21341003.

It is an arithmetic number, because the mean of its divisors is an integer number (3841747949312).

Almost surely, 2^{111122221020111} is an apocalyptic number.

111122221020111 is a deficient number, since it is larger than the sum of its proper divisors (73281680546865).

111122221020111 is a wasteful number, since it uses less digits than its factorization.

111122221020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6071852 (or 6071849 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111122221020111 its reverse (111020122221111), we get a palindrome (222142343241222).

The spelling of 111122221020111 in words is "one hundred eleven trillion, one hundred twenty-two billion, two hundred twenty-one million, twenty thousand, one hundred eleven".