11002211001221 has 8 divisors (see below), whose sum is σ = 12416288277600. Its totient is φ = 9657113104240.

The previous prime is 11002211001181. The next prime is 11002211001227. The reversal of 11002211001221 is 12210011220011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11002211001221 - 2¹⁸ = 11002210739077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11002211001196 and 11002211001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11002211001227) 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, 17244844511 + ... + 17244845148.

It is an arithmetic number, because the mean of its divisors is an integer number (1552036034700).

Almost surely, 2^{11002211001221} is an apocalyptic number.

11002211001221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11002211001221 is a deficient number, since it is larger than the sum of its proper divisors (1414077276379).

11002211001221 is a wasteful number, since it uses less digits than its factorization.

11002211001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34489689699.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11002211001221 its reverse (12210011220011), we get a palindrome (23212222221232).

The spelling of 11002211001221 in words is "eleven trillion, two billion, two hundred eleven million, one thousand, two hundred twenty-one".