11021221122021 has 12 divisors (see below), whose sum is σ = 17366772677280. Its totient is φ = 6679527952680.

The previous prime is 11021221122019. The next prime is 11021221122071. The reversal of 11021221122021 is 12022112212011.

11021221122021 is a `hidden beast` number, since 1 + 1 + 0 + 212 + 211 + 220 + 21 = 666.

11021221122021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11021221122021 - 2¹ = 11021221122019 is a prime.

It is a super-2 number, since 2×11021221122021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11021221121985 and 11021221122003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021221122071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55662732841 + ... + 55662733038.

It is an arithmetic number, because the mean of its divisors is an integer number (1447231056440).

Almost surely, 2^{11021221122021} is an apocalyptic number.

11021221122021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11021221122021 is a deficient number, since it is larger than the sum of its proper divisors (6345551555259).

11021221122021 is a wasteful number, since it uses less digits than its factorization.

11021221122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111325465896 (or 111325465893 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11021221122021 its reverse (12022112212011), we get a palindrome (23043333334032).

The spelling of 11021221122021 in words is "eleven trillion, twenty-one billion, two hundred twenty-one million, one hundred twenty-two thousand, twenty-one".