11011220112121 has 8 divisors (see below), whose sum is σ = 11490550968960. Its totient is φ = 10531937768352.

The previous prime is 11011220112083. The next prime is 11011220112133. The reversal of 11011220112121 is 12121102211011.

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 11011220112121 - 2¹⁹ = 11011219587833 is a prime.

It is a super-2 number, since 2×11011220112121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011220112095 and 11011220112104.

It is not an unprimeable number, because it can be changed into a prime (11011220113121) 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, 11664061 + ... + 12572698.

It is an arithmetic number, because the mean of its divisors is an integer number (1436318871120).

Almost surely, 2^{11011220112121} is an apocalyptic number.

It is an amenable number.

11011220112121 is a deficient number, since it is larger than the sum of its proper divisors (479330856839).

11011220112121 is a wasteful number, since it uses less digits than its factorization.

11011220112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24256535.

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

Adding to 11011220112121 its reverse (12121102211011), we get a palindrome (23132322323132).

The spelling of 11011220112121 in words is "eleven trillion, eleven billion, two hundred twenty million, one hundred twelve thousand, one hundred twenty-one".