11002122111220 has 24 divisors (see below), whose sum is σ = 23104519137000. Its totient is φ = 4400836900992.

The previous prime is 11002122111209. The next prime is 11002122111229. The reversal of 11002122111220 is 2211122120011.

It can be written as a sum of positive squares in 4 ways, for example, as 1740008980836 + 9262113130384 = 1319094^2 + 3043372^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11002122111194 and 11002122111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002122111229) 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, 12827586 + ... + 13658374.

It is an arithmetic number, because the mean of its divisors is an integer number (962688297375).

Almost surely, 2^{11002122111220} is an apocalyptic number.

11002122111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11002122111220 is an abundant number, since it is smaller than the sum of its proper divisors (12102397025780).

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

11002122111220 is a wasteful number, since it uses less digits than its factorization.

11002122111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492947 (or 1492945 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11002122111220 its reverse (2211122120011), we get a palindrome (13213244231231).

The spelling of 11002122111220 in words is "eleven trillion, two billion, one hundred twenty-two million, one hundred eleven thousand, two hundred twenty".