12201022002121 has 8 divisors (see below), whose sum is σ = 12203250360840. Its totient is φ = 12198793830912.

The previous prime is 12201022002119. The next prime is 12201022002151. The reversal of 12201022002121 is 12120022010221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2758854560400 + 9442167441721 = 1660980^2 + 3072811^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12201022002121 - 2¹ = 12201022002119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12201022002095 and 12201022002104.

It is not an unprimeable number, because it can be changed into a prime (12201022002151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203276311 + ... + 203336323.

It is an arithmetic number, because the mean of its divisors is an integer number (1525406295105).

Almost surely, 2^{12201022002121} is an apocalyptic number.

It is an amenable number.

12201022002121 is a deficient number, since it is larger than the sum of its proper divisors (2228358719).

12201022002121 is an equidigital number, since it uses as much as digits as its factorization.

12201022002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93755.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12201022002121 its reverse (12120022010221), we get a palindrome (24321044012342).

It can be divided in two parts, 1220102 and 2002121, that added together give a palindrome (3222223).

The spelling of 12201022002121 in words is "twelve trillion, two hundred one billion, twenty-two million, two thousand, one hundred twenty-one".