12011100222121 has 48 divisors (see below), whose sum is σ = 16415585988480. Its totient is φ = 8638923525120.

The previous prime is 12011100222109. The next prime is 12011100222131. The reversal of 12011100222121 is 12122200111021.

It is not a de Polignac number, because 12011100222121 - 2⁷ = 12011100221993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12011100222095 and 12011100222104.

It is not an unprimeable number, because it can be changed into a prime (12011100222131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 228464980 + ... + 228517546.

It is an arithmetic number, because the mean of its divisors is an integer number (341991374760).

Almost surely, 2^{12011100222121} is an apocalyptic number.

12011100222121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12011100222121 is a deficient number, since it is larger than the sum of its proper divisors (4404485766359).

12011100222121 is a wasteful number, since it uses less digits than its factorization.

12011100222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85214 (or 85207 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12011100222121 its reverse (12122200111021), we get a palindrome (24133300333142).

It can be divided in two parts, 12011100 and 222121, that added together give a palindrome (12233221).

The spelling of 12011100222121 in words is "twelve trillion, eleven billion, one hundred million, two hundred twenty-two thousand, one hundred twenty-one".