1100022001020 has 144 divisors (see below), whose sum is σ = 3388710753792. Its totient is φ = 288781933440.

The previous prime is 1100022001019. The next prime is 1100022001021. The reversal of 1100022001020 is 201002200011.

It is an interprime number because it is at equal distance from previous prime (1100022001019) and next prime (1100022001021).

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 = 1100022000993 and 1100022001011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100022001021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8665729 + ... + 8791751.

It is an arithmetic number, because the mean of its divisors is an integer number (23532713568).

Almost surely, 2^{1100022001020} is an apocalyptic number.

1100022001020 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 1100022001020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1694355376896).

1100022001020 is an abundant number, since it is smaller than the sum of its proper divisors (2288688752772).

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

1100022001020 is a wasteful number, since it uses less digits than its factorization.

1100022001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126792 (or 126787 counting only the distinct ones).

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

Adding to 1100022001020 its reverse (201002200011), we get a palindrome (1301024201031).

The spelling of 1100022001020 in words is "one trillion, one hundred billion, twenty-two million, one thousand, twenty".