111010102111020 has 288 divisors, whose sum is σ = 377682849750528. Its totient is φ = 24245675317248.

The previous prime is 111010102110967. The next prime is 111010102111121. The reversal of 111010102111020 is 20111201010111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 111010102110987 and 111010102111005.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 65224579 + ... + 66904901.

It is an arithmetic number, because the mean of its divisors is an integer number (1311398783856).

Almost surely, 2^{111010102111020} is an apocalyptic number.

111010102111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111010102111020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188841424875264).

111010102111020 is an abundant number, since it is smaller than the sum of its proper divisors (266672747639508).

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

111010102111020 is a wasteful number, since it uses less digits than its factorization.

111010102111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681349 (or 1681340 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111010102111020 its reverse (20111201010111), we get a palindrome (131121303121131).

The spelling of 111010102111020 in words is "one hundred eleven trillion, ten billion, one hundred two million, one hundred eleven thousand, twenty".