12021112202121 has 48 divisors (see below), whose sum is σ = 18977635535040. Its totient is φ = 7271961528960.

The previous prime is 12021112202087. The next prime is 12021112202129. The reversal of 12021112202121 is 12120221112021.

12021112202121 is a `hidden beast` number, since 1 + 20 + 211 + 1 + 220 + 212 + 1 = 666.

It is not a de Polignac number, because 12021112202121 - 2¹³ = 12021112193929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021112202094 and 12021112202103.

It is not an unprimeable number, because it can be changed into a prime (12021112202129) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 220798915 + ... + 220853351.

It is an arithmetic number, because the mean of its divisors is an integer number (395367406980).

Almost surely, 2^{12021112202121} is an apocalyptic number.

12021112202121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12021112202121 is a deficient number, since it is larger than the sum of its proper divisors (6956523332919).

12021112202121 is a wasteful number, since it uses less digits than its factorization.

12021112202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58566 (or 58563 counting only the distinct ones).

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

Adding to 12021112202121 its reverse (12120221112021), we get a palindrome (24141333314142).

The spelling of 12021112202121 in words is "twelve trillion, twenty-one billion, one hundred twelve million, two hundred two thousand, one hundred twenty-one".