11001121122020 has 24 divisors (see below), whose sum is σ = 23107079935800. Its totient is φ = 4399548338432.

The previous prime is 11001121121927. The next prime is 11001121122029. The reversal of 11001121122020 is 2022112110011.

It can be written as a sum of positive squares in 4 ways, for example, as 1582458329764 + 9418662792256 = 1257958^2 + 3068984^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11001121121986 and 11001121122004.

It is not an unprimeable number, because it can be changed into a prime (11001121122029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56156675 + ... + 56352234.

It is an arithmetic number, because the mean of its divisors is an integer number (962794997325).

Almost surely, 2^{11001121122020} is an apocalyptic number.

11001121122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11001121122020 is an abundant number, since it is smaller than the sum of its proper divisors (12105958813780).

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

11001121122020 is a wasteful number, since it uses less digits than its factorization.

11001121122020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112513807 (or 112513805 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11001121122020 its reverse (2022112110011), we get a palindrome (13023233232031).

The spelling of 11001121122020 in words is "eleven trillion, one billion, one hundred twenty-one million, one hundred twenty-two thousand, twenty".