2020122201221 has 8 divisors (see below), whose sum is σ = 2090328622200. Its totient is φ = 1949952249280.

The previous prime is 2020122201211. The next prime is 2020122201233. The reversal of 2020122201221 is 1221022210202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 207762756100 + 1812359445121 = 455810^2 + 1346239^2 .

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 2020122201221 - 2²² = 2020118006917 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2020122201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020122201211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9004526 + ... + 9226143.

It is an arithmetic number, because the mean of its divisors is an integer number (261291077775).

Almost surely, 2^{2020122201221} is an apocalyptic number.

It is an amenable number.

2020122201221 is a deficient number, since it is larger than the sum of its proper divisors (70206420979).

2020122201221 is a wasteful number, since it uses less digits than its factorization.

2020122201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18234519.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2020122201221 its reverse (1221022210202), we get a palindrome (3241144411423).

The spelling of 2020122201221 in words is "two trillion, twenty billion, one hundred twenty-two million, two hundred one thousand, two hundred twenty-one".