11021002100020 has 48 divisors (see below), whose sum is σ = 25257299760000. Its totient is φ = 4006179054720.

The previous prime is 11021002099999. The next prime is 11021002100021. The reversal of 11021002100020 is 2000120012011.

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 (11021002100021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8506800 + ... + 9716359.

It is an arithmetic number, because the mean of its divisors is an integer number (526193745000).

Almost surely, 2^{11021002100020} is an apocalyptic number.

11021002100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11021002100020 is an abundant number, since it is smaller than the sum of its proper divisors (14236297659980).

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

11021002100020 is a wasteful number, since it uses less digits than its factorization.

11021002100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18225928 (or 18225926 counting only the distinct ones).

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

Adding to 11021002100020 its reverse (2000120012011), we get a palindrome (13021122112031).

The spelling of 11021002100020 in words is "eleven trillion, twenty-one billion, two million, one hundred thousand, twenty".