11002020121220 has 48 divisors (see below), whose sum is σ = 23942363765040. Its totient is φ = 4241691869184.

The previous prime is 11002020121219. The next prime is 11002020121289. The reversal of 11002020121220 is 2212102020011.

It can be written as a sum of positive squares in 8 ways, for example, as 2215882325056 + 8786137796164 = 1488584^2 + 2964142^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11002020121195 and 11002020121204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16102949 + ... + 16772268.

It is an arithmetic number, because the mean of its divisors is an integer number (498799245105).

Almost surely, 2^{11002020121220} is an apocalyptic number.

11002020121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11002020121220 is an abundant number, since it is smaller than the sum of its proper divisors (12940343643820).

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

11002020121220 is a wasteful number, since it uses less digits than its factorization.

11002020121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32875832 (or 32875830 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 11002020121220 its reverse (2212102020011), we get a palindrome (13214122141231).

The spelling of 11002020121220 in words is "eleven trillion, two billion, twenty million, one hundred twenty-one thousand, two hundred twenty".