11011020002100 has 108 divisors (see below), whose sum is σ = 35703548850060. Its totient is φ = 2835021235200.

The previous prime is 11011020002083. The next prime is 11011020002131. The reversal of 11011020002100 is 120002011011.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1628242352676 + 9382777649424 = 1276026^2 + 3063132^2 .

It is a super-2 number, since 2×11011020002100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 210912981 + ... + 210965180.

Almost surely, 2^{11011020002100} is an apocalyptic number.

11011020002100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11011020002100 is an abundant number, since it is smaller than the sum of its proper divisors (24692528847960).

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

11011020002100 is a wasteful number, since it uses less digits than its factorization.

11011020002100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421878210 (or 421878200 counting only the distinct ones).

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

Adding to 11011020002100 its reverse (120002011011), we get a palindrome (11131022013111).

The spelling of 11011020002100 in words is "eleven trillion, eleven billion, twenty million, two thousand, one hundred".