111020121113020 has 192 divisors, whose sum is σ = 278730740736000. Its totient is φ = 36341091118080.

The previous prime is 111020121112997. The next prime is 111020121113023. The reversal of 111020121113020 is 20311121020111.

It is a happy number.

It is a super-2 number, since 2×111020121113020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111020121112985 and 111020121113003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020121113023) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 134490135 + ... + 135313105.

It is an arithmetic number, because the mean of its divisors is an integer number (1451722608000).

Almost surely, 2^{111020121113020} is an apocalyptic number.

111020121113020 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 111020121113020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139365370368000).

111020121113020 is an abundant number, since it is smaller than the sum of its proper divisors (167710619622980).

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

111020121113020 is a wasteful number, since it uses less digits than its factorization.

111020121113020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823388 (or 823386 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111020121113020 its reverse (20311121020111), we get a palindrome (131331242133131).

The spelling of 111020121113020 in words is "one hundred eleven trillion, twenty billion, one hundred twenty-one million, one hundred thirteen thousand, twenty".