12202111122221 has 8 divisors (see below), whose sum is σ = 12518053641504. Its totient is φ = 11889907567920.

The previous prime is 12202111122209. The next prime is 12202111122251. The reversal of 12202111122221 is 12222111120221.

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 12202111122221 - 2³⁸ = 11927233215277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12202111122193 and 12202111122202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12202111122251) 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, 934734635 + ... + 934747688.

It is an arithmetic number, because the mean of its divisors is an integer number (1564756705188).

Almost surely, 2^{12202111122221} is an apocalyptic number.

It is an amenable number.

12202111122221 is a deficient number, since it is larger than the sum of its proper divisors (315942519283).

12202111122221 is a wasteful number, since it uses less digits than its factorization.

12202111122221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869482491.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12202111122221 its reverse (12222111120221), we get a palindrome (24424222242442).

It can be divided in two parts, 1220211 and 1122221, that added together give a palindrome (2342432).

The spelling of 12202111122221 in words is "twelve trillion, two hundred two billion, one hundred eleven million, one hundred twenty-two thousand, two hundred twenty-one".