111002100101020 has 96 divisors (see below), whose sum is σ = 254052638687232. Its totient is φ = 40577850528768.

The previous prime is 111002100100979. The next prime is 111002100101047. The reversal of 111002100101020 is 20101001200111.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 111002100100988 and 111002100101006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25318234 + ... + 29377153.

It is an arithmetic number, because the mean of its divisors is an integer number (2646381652992).

Almost surely, 2^{111002100101020} is an apocalyptic number.

111002100101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111002100101020 is an abundant number, since it is smaller than the sum of its proper divisors (143050538586212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111002100101020 is a wasteful number, since it uses less digits than its factorization.

111002100101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54695587 (or 54695585 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111002100101020 its reverse (20101001200111), we get a palindrome (131103101301131).

The spelling of 111002100101020 in words is "one hundred eleven trillion, two billion, one hundred million, one hundred one thousand, twenty".