2202122121221 has 8 divisors (see below), whose sum is σ = 2406208590144. Its totient is φ = 1998684577120.

The previous prime is 2202122121203. The next prime is 2202122121247. The reversal of 2202122121221 is 1221212212022.

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

It is not a de Polignac number, because 2202122121221 - 2¹⁴ = 2202122104837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2202122121193 and 2202122121202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2202122120221) 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, 162224105 + ... + 162237678.

It is an arithmetic number, because the mean of its divisors is an integer number (300776073768).

Almost surely, 2^{2202122121221} is an apocalyptic number.

It is an amenable number.

2202122121221 is a deficient number, since it is larger than the sum of its proper divisors (204086468923).

2202122121221 is a wasteful number, since it uses less digits than its factorization.

2202122121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324462411.

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

Adding to 2202122121221 its reverse (1221212212022), we get a palindrome (3423334333243).

The spelling of 2202122121221 in words is "two trillion, two hundred two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-one".