12202222210121 has 4 divisors (see below), whose sum is σ = 12275289409152. Its totient is φ = 12129155011092.

The previous prime is 12202222210117. The next prime is 12202222210141. The reversal of 12202222210121 is 12101222220221.

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 12202222210121 - 2² = 12202222210117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12202222210093 and 12202222210102.

It is not an unprimeable number, because it can be changed into a prime (12202222210111) 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, 36533599265 + ... + 36533599598.

It is an arithmetic number, because the mean of its divisors is an integer number (3068822352288).

Almost surely, 2^{12202222210121} is an apocalyptic number.

It is an amenable number.

12202222210121 is a deficient number, since it is larger than the sum of its proper divisors (73067199031).

12202222210121 is an equidigital number, since it uses as much as digits as its factorization.

12202222210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73067199030.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 12202222210121 its reverse (12101222220221), we get a palindrome (24303444430342).

It can be divided in two parts, 1220222 and 2210121, that added together give a palindrome (3430343).

The spelling of 12202222210121 in words is "twelve trillion, two hundred two billion, two hundred twenty-two million, two hundred ten thousand, one hundred twenty-one".