1020110020020 has 288 divisors, whose sum is σ = 3809890925568. Its totient is φ = 215148358656.

The previous prime is 1020110019967. The next prime is 1020110020021. The reversal of 1020110020020 is 200200110201.

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 = 1020110019984 and 1020110020011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020110020021) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 47933622 + ... + 47954898.

It is an arithmetic number, because the mean of its divisors is an integer number (13228787936).

Almost surely, 2^{1020110020020} is an apocalyptic number.

1020110020020 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 1020110020020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1904945462784).

1020110020020 is an abundant number, since it is smaller than the sum of its proper divisors (2789780905548).

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

1020110020020 is a wasteful number, since it uses less digits than its factorization.

1020110020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24239 (or 24234 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1020110020020 its reverse (200200110201), we get a palindrome (1220310130221).

The spelling of 1020110020020 in words is "one trillion, twenty billion, one hundred ten million, twenty thousand, twenty".