1100021021120 has 56 divisors (see below), whose sum is σ = 2993628642144. Its totient is φ = 377150063616.

The previous prime is 1100021021101. The next prime is 1100021021173. The reversal of 1100021021120 is 211201200011.

It is a tau number, because it is divible by the number of its divisors (56).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245538167 + ... + 245542646.

It is an arithmetic number, because the mean of its divisors is an integer number (53457654324).

Almost surely, 2^{1100021021120} is an apocalyptic number.

1100021021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1100021021120 is an abundant number, since it is smaller than the sum of its proper divisors (1893607621024).

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

1100021021120 is an equidigital number, since it uses as much as digits as its factorization.

1100021021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491080837 (or 491080827 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1100021021120 its reverse (211201200011), we get a palindrome (1311222221131).

The spelling of 1100021021120 in words is "one trillion, one hundred billion, twenty-one million, twenty-one thousand, one hundred twenty".