11002022122121 has 4 divisors (see below), whose sum is σ = 11002853041044. Its totient is φ = 11001191203200.

The previous prime is 11002022122111. The next prime is 11002022122193. The reversal of 11002022122121 is 12122122020011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10916283840400 + 85738281721 = 3303980^2 + 292811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11002022122121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11002022122121.

It is not an unprimeable number, because it can be changed into a prime (11002022122111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415439600 + ... + 415466081.

It is an arithmetic number, because the mean of its divisors is an integer number (2750713260261).

Almost surely, 2^{11002022122121} is an apocalyptic number.

It is an amenable number.

11002022122121 is a deficient number, since it is larger than the sum of its proper divisors (830918923).

11002022122121 is an equidigital number, since it uses as much as digits as its factorization.

11002022122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830918922.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11002022122121 its reverse (12122122020011), we get a palindrome (23124144142132).

The spelling of 11002022122121 in words is "eleven trillion, two billion, twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".