12210121023101 has 4 divisors (see below), whose sum is σ = 12631159679100. Its totient is φ = 11789082367104.

The previous prime is 12210121023073. The next prime is 12210121023151. The reversal of 12210121023101 is 10132012101221.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7354135846201 + 4855985176900 = 2711851^2 + 2203630^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12210121023101 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 12210121023101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12210121023151) 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, 210519327956 + ... + 210519328013.

It is an arithmetic number, because the mean of its divisors is an integer number (3157789919775).

Almost surely, 2^{12210121023101} is an apocalyptic number.

It is an amenable number.

12210121023101 is a deficient number, since it is larger than the sum of its proper divisors (421038655999).

12210121023101 is an equidigital number, since it uses as much as digits as its factorization.

12210121023101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 421038655998.

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

Adding to 12210121023101 its reverse (10132012101221), we get a palindrome (22342133124322).

The spelling of 12210121023101 in words is "twelve trillion, two hundred ten billion, one hundred twenty-one million, twenty-three thousand, one hundred one".