1111011020020 has 96 divisors (see below), whose sum is σ = 2576900874240. Its totient is φ = 398979960960.

The previous prime is 1111011020017. The next prime is 1111011020023. The reversal of 1111011020020 is 200201101111.

It is an interprime number because it is at equal distance from previous prime (1111011020017) and next prime (1111011020023).

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 = 1111011019979 and 1111011020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111011020023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52998301 + ... + 53019259.

It is an arithmetic number, because the mean of its divisors is an integer number (26842717440).

Almost surely, 2^{1111011020020} is an apocalyptic number.

1111011020020 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 1111011020020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1288450437120).

1111011020020 is an abundant number, since it is smaller than the sum of its proper divisors (1465889854220).

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

1111011020020 is a wasteful number, since it uses less digits than its factorization.

1111011020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23965 (or 23963 counting only the distinct ones).

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

Adding to 1111011020020 its reverse (200201101111), we get a palindrome (1311212121131).

The spelling of 1111011020020 in words is "one trillion, one hundred eleven billion, eleven million, twenty thousand, twenty".