12211201012123 has 16 divisors (see below), whose sum is σ = 12374910763200. Its totient is φ = 12048483363840.

The previous prime is 12211201012091. The next prime is 12211201012273. The reversal of 12211201012123 is 32121010211221.

It is a cyclic number.

It is not a de Polignac number, because 12211201012123 - 2⁵ = 12211201012091 is a prime.

It is a super-2 number, since 2×12211201012123² (a number of 27 digits) contains 22 as substring.

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 12211201012123.

It is not an unprimeable number, because it can be changed into a prime (12211201016123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193554298 + ... + 193617376.

It is an arithmetic number, because the mean of its divisors is an integer number (773431922700).

Almost surely, 2^{12211201012123} is an apocalyptic number.

12211201012123 is a deficient number, since it is larger than the sum of its proper divisors (163709751077).

12211201012123 is a wasteful number, since it uses less digits than its factorization.

12211201012123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70902.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 12211201012123 its reverse (32121010211221), we get a palindrome (44332211223344).

The spelling of 12211201012123 in words is "twelve trillion, two hundred eleven billion, two hundred one million, twelve thousand, one hundred twenty-three".