11021121122121 has 24 divisors (see below), whose sum is σ = 17373102861504. Its totient is φ = 6676972054560.

The previous prime is 11021121122087. The next prime is 11021121122183. The reversal of 11021121122121 is 12122112112011.

It is a happy number.

11021121122121 is a `hidden beast` number, since 1 + 1 + 0 + 211 + 211 + 221 + 21 = 666.

It is not a de Polignac number, because 11021121122121 - 2³⁰ = 11020047380297 is a prime.

It is a super-2 number, since 2×11021121122121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11021121122094 and 11021121122103.

It is not an unprimeable number, because it can be changed into a prime (11021121122191) 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 23 ways as a sum of consecutive naturals, for example, 20527741 + ... + 21057786.

It is an arithmetic number, because the mean of its divisors is an integer number (723879285896).

Almost surely, 2^{11021121122121} is an apocalyptic number.

11021121122121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11021121122121 is a deficient number, since it is larger than the sum of its proper divisors (6351981739383).

11021121122121 is a wasteful number, since it uses less digits than its factorization.

11021121122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41588221 (or 41588218 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11021121122121 its reverse (12122112112011), we get a palindrome (23143233234132).

The spelling of 11021121122121 in words is "eleven trillion, twenty-one billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred twenty-one".