1021110220000 has 120 divisors (see below), whose sum is σ = 2705322251016. Its totient is φ = 377025216000.

The previous prime is 1021110219991. The next prime is 1021110220001. The reversal of 1021110220000 is 220111201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021110220001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1703674 + ... + 2223673.

Almost surely, 2^{1021110220000} is an apocalyptic number.

1021110220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021110220000 is an abundant number, since it is smaller than the sum of its proper divisors (1684212031016).

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

1021110220000 is an equidigital number, since it uses as much as digits as its factorization.

1021110220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927390 (or 3927367 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1021110220000 its reverse (220111201), we get a palindrome (1021330331201).

The spelling of 1021110220000 in words is "one trillion, twenty-one billion, one hundred ten million, two hundred twenty thousand".