12210121221001 has 16 divisors (see below), whose sum is σ = 13327347483648. Its totient is φ = 11094098979600.

The previous prime is 12210121220977. The next prime is 12210121221043. The reversal of 12210121221001 is 10012212101221.

It is a cyclic number.

It is not a de Polignac number, because 12210121221001 - 2⁹ = 12210121220489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12210121221071) 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, 187633596 + ... + 187698658.

It is an arithmetic number, because the mean of its divisors is an integer number (832959217728).

Almost surely, 2^{12210121221001} is an apocalyptic number.

12210121221001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12210121221001 is a deficient number, since it is larger than the sum of its proper divisors (1117226262647).

12210121221001 is a wasteful number, since it uses less digits than its factorization.

12210121221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74052.

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

Adding to 12210121221001 its reverse (10012212101221), we get a palindrome (22222333322222).

The spelling of 12210121221001 in words is "twelve trillion, two hundred ten billion, one hundred twenty-one million, two hundred twenty-one thousand, one".