11012011020020 has 48 divisors (see below), whose sum is σ = 24139577291088. Its totient is φ = 4215497333760.

The previous prime is 11012011020013. The next prime is 11012011020029. The reversal of 11012011020020 is 2002011021011.

It can be written as a sum of positive squares in 8 ways, for example, as 522561277456 + 10489449742564 = 722884^2 + 3238742^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11012011019983 and 11012011020010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012011020029) 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, 121931057 + ... + 122021336.

It is an arithmetic number, because the mean of its divisors is an integer number (502907860231).

Almost surely, 2^{11012011020020} is an apocalyptic number.

11012011020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11012011020020 is an abundant number, since it is smaller than the sum of its proper divisors (13127566271068).

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

11012011020020 is a wasteful number, since it uses less digits than its factorization.

11012011020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243952500 (or 243952498 counting only the distinct ones).

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

Adding to 11012011020020 its reverse (2002011021011), we get a palindrome (13014022041031).

Subtracting from 11012011020020 its reverse (2002011021011), we obtain a palindrome (9009999999009).

The spelling of 11012011020020 in words is "eleven trillion, twelve billion, eleven million, twenty thousand, twenty".