12210011023121 has 4 divisors (see below), whose sum is σ = 12211222464000. Its totient is φ = 12208799582244.

The previous prime is 12210011023081. The next prime is 12210011023153. The reversal of 12210011023121 is 12132011001221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12210011023121 - 2⁶ = 12210011023057 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 12210011023121.

It is not an unprimeable number, because it can be changed into a prime (12210011083121) 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, 605705321 + ... + 605725478.

It is an arithmetic number, because the mean of its divisors is an integer number (3052805616000).

Almost surely, 2^{12210011023121} is an apocalyptic number.

It is an amenable number.

12210011023121 is a deficient number, since it is larger than the sum of its proper divisors (1211440879).

12210011023121 is a wasteful number, since it uses less digits than its factorization.

12210011023121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1211440878.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 12210011023121 its reverse (12132011001221), we get a palindrome (24342022024342).

The spelling of 12210011023121 in words is "twelve trillion, two hundred ten billion, eleven million, twenty-three thousand, one hundred twenty-one".