11001121101020 has 48 divisors (see below), whose sum is σ = 23430344103936. Its totient is φ = 4337987976000.

The previous prime is 11001121100987. The next prime is 11001121101029. The reversal of 11001121101020 is 2010112110011.

It is a junction number, because it is equal to n+sod(n) for n = 11001121100992 and 11001121101010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001121101029) 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, 12483125 + ... + 13335315.

It is an arithmetic number, because the mean of its divisors is an integer number (488132168832).

Almost surely, 2^{11001121101020} is an apocalyptic number.

11001121101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11001121101020 is an abundant number, since it is smaller than the sum of its proper divisors (12429223002916).

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

11001121101020 is a wasteful number, since it uses less digits than its factorization.

11001121101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861362 (or 861360 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11001121101020 its reverse (2010112110011), we get a palindrome (13011233211031).

The spelling of 11001121101020 in words is "eleven trillion, one billion, one hundred twenty-one million, one hundred one thousand, twenty".