12210021221201 has 8 divisors (see below), whose sum is σ = 12292205865000. Its totient is φ = 12127839753600.

The previous prime is 12210021221197. The next prime is 12210021221213. The reversal of 12210021221201 is 10212212001221.

It can be written as a sum of positive squares in 4 ways, for example, as 42314547025 + 12167706674176 = 205705^2 + 3488224^2 .

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 12210021221201 - 2² = 12210021221197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12210021221201.

It is not an unprimeable number, because it can be changed into a prime (12210021221231) 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, 7189475 + ... + 8724023.

It is an arithmetic number, because the mean of its divisors is an integer number (1536525733125).

Almost surely, 2^{12210021221201} is an apocalyptic number.

It is an amenable number.

12210021221201 is a deficient number, since it is larger than the sum of its proper divisors (82184643799).

12210021221201 is a wasteful number, since it uses less digits than its factorization.

12210021221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588099.

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

Adding to 12210021221201 its reverse (10212212001221), we get a palindrome (22422233222422).

The spelling of 12210021221201 in words is "twelve trillion, two hundred ten billion, twenty-one million, two hundred twenty-one thousand, two hundred one".