12210121020211 has 4 divisors (see below), whose sum is σ = 12226554562032. Its totient is φ = 12193687478392.

The previous prime is 12210121020199. The next prime is 12210121020217. The reversal of 12210121020211 is 11202012101221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12210121020211 - 2⁹ = 12210121019699 is a prime.

It is a super-2 number, since 2×12210121020211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12210121020217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8216769796 + ... + 8216771281.

It is an arithmetic number, because the mean of its divisors is an integer number (3056638640508).

Almost surely, 2^{12210121020211} is an apocalyptic number.

12210121020211 is a deficient number, since it is larger than the sum of its proper divisors (16433541821).

12210121020211 is an equidigital number, since it uses as much as digits as its factorization.

12210121020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16433541820.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12210121020211 its reverse (11202012101221), we get a palindrome (23412133121432).

The spelling of 12210121020211 in words is "twelve trillion, two hundred ten billion, one hundred twenty-one million, twenty thousand, two hundred eleven".