111020100101011 has 4 divisors (see below), whose sum is σ = 115847060974992. Its totient is φ = 106193139227032.

The previous prime is 111020100100981. The next prime is 111020100101039. The reversal of 111020100101011 is 110101001020111.

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 111020100101011 - 2¹⁷ = 111020099969939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111020100101051) 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, 2413480436956 + ... + 2413480437001.

It is an arithmetic number, because the mean of its divisors is an integer number (28961765243748).

Almost surely, 2^{111020100101011} is an apocalyptic number.

111020100101011 is a deficient number, since it is larger than the sum of its proper divisors (4826960873981).

111020100101011 is an equidigital number, since it uses as much as digits as its factorization.

111020100101011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4826960873980.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 111020100101011 its reverse (110101001020111), we get a palindrome (221121101121122).

It can be divided in two parts, 111020100 and 101011, that added together give a palindrome (111121111).

The spelling of 111020100101011 in words is "one hundred eleven trillion, twenty billion, one hundred million, one hundred one thousand, eleven".