11000122020 has 72 divisors (see below), whose sum is σ = 33383818104. Its totient is φ = 2931890688.

The previous prime is 11000121997. The next prime is 11000122027. The reversal of 11000122020 is 2022100011.

It can be written as a sum of positive squares in 4 ways, for example, as 1617487524 + 9382634496 = 40218^2 + 96864^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 11000121993 and 11000122011.

It is not an unprimeable number, because it can be changed into a prime (11000122027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 370362 + ... + 398958.

Almost surely, 2^11000122020 is an apocalyptic number.

11000122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11000122020 is an abundant number, since it is smaller than the sum of its proper divisors (22383696084).

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

11000122020 is a wasteful number, since it uses less digits than its factorization.

11000122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30749 (or 30744 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 11000122020 its reverse (2022100011), we get a palindrome (13022222031).

The spelling of 11000122020 in words is "eleven billion, one hundred twenty-two thousand, twenty".