10111100101020 has 72 divisors (see below), whose sum is σ = 30685543993104. Its totient is φ = 2694956479488.

The previous prime is 10111100101007. The next prime is 10111100101027. The reversal of 10111100101020 is 2010100111101.

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 = 10111100100993 and 10111100101011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111100101027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13561774 + ... + 14287893.

Almost surely, 2^{10111100101020} is an apocalyptic number.

10111100101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10111100101020 is an abundant number, since it is smaller than the sum of its proper divisors (20574443892084).

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

10111100101020 is a wasteful number, since it uses less digits than its factorization.

10111100101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27851699 (or 27851694 counting only the distinct ones).

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

Adding to 10111100101020 its reverse (2010100111101), we get a palindrome (12121200212121).

The spelling of 10111100101020 in words is "ten trillion, one hundred eleven billion, one hundred million, one hundred one thousand, twenty".