111020101011 has 80 divisors (see below), whose sum is σ = 177042336768. Its totient is φ = 69220008000.

The previous prime is 111020100991. The next prime is 111020101039. The reversal of 111020101011 is 110101020111.

It is not a de Polignac number, because 111020101011 - 2⁷ = 111020100883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 111020100984 and 111020101002.

It is not an unprimeable number, because it can be changed into a prime (111020101051) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 8910336 + ... + 8922786.

Almost surely, 2^111020101011 is an apocalyptic number.

111020101011 is a deficient number, since it is larger than the sum of its proper divisors (66022235757).

111020101011 is a wasteful number, since it uses less digits than its factorization.

111020101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12614 (or 12605 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111020101011 its reverse (110101020111), we get a palindrome (221121121122).

The spelling of 111020101011 in words is "one hundred eleven billion, twenty million, one hundred one thousand, eleven".