11000121131020 has 72 divisors (see below), whose sum is σ = 26920851428016. Its totient is φ = 3764575092096.

The previous prime is 11000121130997. The next prime is 11000121131081. The reversal of 11000121131020 is 2013112100011.

It is a happy number.

It is a super-3 number, since 3×11000121131020³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9724099 + ... + 10796218.

It is an arithmetic number, because the mean of its divisors is an integer number (373900714278).

Almost surely, 2^{11000121131020} is an apocalyptic number.

11000121131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11000121131020 is an abundant number, since it is smaller than the sum of its proper divisors (15920730296996).

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

11000121131020 is a wasteful number, since it uses less digits than its factorization.

11000121131020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20520887 (or 20520878 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 11000121131020 its reverse (2013112100011), we get a palindrome (13013233231031).

The spelling of 11000121131020 in words is "eleven trillion, one hundred twenty-one million, one hundred thirty-one thousand, twenty".