11011021112221 has 8 divisors (see below), whose sum is σ = 12482129196320. Its totient is φ = 9629071093872.

The previous prime is 11011021112209. The next prime is 11011021112239. The reversal of 11011021112221 is 12221112011011.

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 11011021112221 - 2⁷ = 11011021112093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011021112195 and 11011021112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011021112251) 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, 22289516175 + ... + 22289516668.

It is an arithmetic number, because the mean of its divisors is an integer number (1560266149540).

Almost surely, 2^{11011021112221} is an apocalyptic number.

It is an amenable number.

11011021112221 is a deficient number, since it is larger than the sum of its proper divisors (1471108084099).

11011021112221 is a wasteful number, since it uses less digits than its factorization.

11011021112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44579032875.

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

Adding to 11011021112221 its reverse (12221112011011), we get a palindrome (23232133123232).

The spelling of 11011021112221 in words is "eleven trillion, eleven billion, twenty-one million, one hundred twelve thousand, two hundred twenty-one".