12021103220121 has 12 divisors (see below), whose sum is σ = 17366184404400. Its totient is φ = 8012975594040.

The previous prime is 12021103220117. The next prime is 12021103220131. The reversal of 12021103220121 is 12102230112021.

12021103220121 is a `hidden beast` number, since 12 + 0 + 211 + 0 + 322 + 0 + 121 = 666.

It is not a de Polignac number, because 12021103220121 - 2² = 12021103220117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12021103220094 and 12021103220103.

It is not an unprimeable number, because it can be changed into a prime (12021103220131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91031971 + ... + 91163928.

It is an arithmetic number, because the mean of its divisors is an integer number (1447182033700).

Almost surely, 2^{12021103220121} is an apocalyptic number.

It is an amenable number.

12021103220121 is a deficient number, since it is larger than the sum of its proper divisors (5345081184279).

12021103220121 is a wasteful number, since it uses less digits than its factorization.

12021103220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182203236 (or 182203233 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12021103220121 its reverse (12102230112021), we get a palindrome (24123333332142).

The spelling of 12021103220121 in words is "twelve trillion, twenty-one billion, one hundred three million, two hundred twenty thousand, one hundred twenty-one".