12212021210121 has 24 divisors (see below), whose sum is σ = 17657037478080. Its totient is φ = 8133296721696.

The previous prime is 12212021210101. The next prime is 12212021210141. The reversal of 12212021210121 is 12101212021221.

12212021210121 is a `hidden beast` number, since 1 + 221 + 202 + 121 + 0 + 121 = 666.

12212021210121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12212021210101) and next prime (12212021210141).

It is not a de Polignac number, because 12212021210121 - 2¹⁵ = 12212021177353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12212021210094 and 12212021210103.

It is not an unprimeable number, because it can be changed into a prime (12212021210101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40165156 + ... + 40468058.

It is an arithmetic number, because the mean of its divisors is an integer number (735709894920).

Almost surely, 2^{12212021210121} is an apocalyptic number.

It is an amenable number.

12212021210121 is a deficient number, since it is larger than the sum of its proper divisors (5445016267959).

12212021210121 is a wasteful number, since it uses less digits than its factorization.

12212021210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307325 (or 307322 counting only the distinct ones).

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

Adding to 12212021210121 its reverse (12101212021221), we get a palindrome (24313233231342).

The spelling of 12212021210121 in words is "twelve trillion, two hundred twelve billion, twenty-one million, two hundred ten thousand, one hundred twenty-one".