11002222021221 has 72 divisors (see below), whose sum is σ = 16545560734560. Its totient is φ = 7044731229312.

The previous prime is 11002222021207. The next prime is 11002222021229. The reversal of 11002222021221 is 12212022220011.

It is a happy number.

It is not a de Polignac number, because 11002222021221 - 2¹⁵ = 11002221988453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11002222021194 and 11002222021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002222021229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1381663986 + ... + 1381671948.

Almost surely, 2^{11002222021221} is an apocalyptic number.

It is an amenable number.

11002222021221 is a deficient number, since it is larger than the sum of its proper divisors (5543338713339).

11002222021221 is a wasteful number, since it uses less digits than its factorization.

11002222021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8963 (or 8931 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11002222021221 its reverse (12212022220011), we get a palindrome (23214244241232).

The spelling of 11002222021221 in words is "eleven trillion, two billion, two hundred twenty-two million, twenty-one thousand, two hundred twenty-one".