1100021011020 has 36 divisors (see below), whose sum is σ = 3336730400640. Its totient is φ = 293338936224.

The previous prime is 1100021010989. The next prime is 1100021011073. The reversal of 1100021011020 is 201101200011.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1100021011020² (a number of 25 digits) contains 22 as substring.

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 = 1100021010993 and 1100021011011.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3055613740 + ... + 3055614099.

Almost surely, 2^{1100021011020} is an apocalyptic number.

1100021011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100021011020 is an abundant number, since it is smaller than the sum of its proper divisors (2236709389620).

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

1100021011020 is a wasteful number, since it uses less digits than its factorization.

1100021011020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6111227854 (or 6111227849 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1100021011020 its reverse (201101200011), we get a palindrome (1301122211031).

The spelling of 1100021011020 in words is "one trillion, one hundred billion, twenty-one million, eleven thousand, twenty".