11012221221221 has 8 divisors (see below), whose sum is σ = 12427585077600. Its totient is φ = 9665899504240.

The previous prime is 11012221221217. The next prime is 11012221221241. The reversal of 11012221221221 is 12212212221011.

11012221221221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11012221221221 - 2² = 11012221221217 is a prime.

It is a super-2 number, since 2×11012221221221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11012221221193 and 11012221221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012221221241) 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, 17260534511 + ... + 17260535148.

It is an arithmetic number, because the mean of its divisors is an integer number (1553448134700).

Almost surely, 2^{11012221221221} is an apocalyptic number.

11012221221221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11012221221221 is a deficient number, since it is larger than the sum of its proper divisors (1415363856379).

11012221221221 is a wasteful number, since it uses less digits than its factorization.

11012221221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34521069699.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11012221221221 its reverse (12212212221011), we get a palindrome (23224433442232).

The spelling of 11012221221221 in words is "eleven trillion, twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-one".