12102121200221 has 8 divisors (see below), whose sum is σ = 13048889642880. Its totient is φ = 11157615049392.

The previous prime is 12102121200209. The next prime is 12102121200223. The reversal of 12102121200221 is 12200212120121.

12102121200221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12102121200221 - 2³⁴ = 12084941331037 is a prime.

It is a super-2 number, since 2×12102121200221² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12102121200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102121200223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565561841 + ... + 565583238.

It is an arithmetic number, because the mean of its divisors is an integer number (1631111205360).

Almost surely, 2^{12102121200221} is an apocalyptic number.

It is an amenable number.

12102121200221 is a deficient number, since it is larger than the sum of its proper divisors (946768442659).

12102121200221 is a wasteful number, since it uses less digits than its factorization.

12102121200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131145915.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12102121200221 its reverse (12200212120121), we get a palindrome (24302333320342).

The spelling of 12102121200221 in words is "twelve trillion, one hundred two billion, one hundred twenty-one million, two hundred thousand, two hundred twenty-one".