12011121012121 has 32 divisors (see below), whose sum is σ = 15400043025408. Its totient is φ = 9096904040640.

The previous prime is 12011121012097. The next prime is 12011121012197. The reversal of 12011121012121 is 12121012111021.

It is not a de Polignac number, because 12011121012121 - 2²¹ = 12011118914969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12011121012095 and 12011121012104.

It is not an unprimeable number, because it can be changed into a prime (12011121010121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13316515 + ... + 14189848.

It is an arithmetic number, because the mean of its divisors is an integer number (481251344544).

Almost surely, 2^{12011121012121} is an apocalyptic number.

12011121012121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12011121012121 is a deficient number, since it is larger than the sum of its proper divisors (3388922013287).

12011121012121 is a wasteful number, since it uses less digits than its factorization.

12011121012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27506541.

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

Adding to 12011121012121 its reverse (12121012111021), we get a palindrome (24132133123142).

The spelling of 12011121012121 in words is "twelve trillion, eleven billion, one hundred twenty-one million, twelve thousand, one hundred twenty-one".