122221001220221 has 32 divisors (see below), whose sum is σ = 131710881399552. Its totient is φ = 112996814515200.

The previous prime is 122221001220163. The next prime is 122221001220233. The reversal of 122221001220221 is 122022100122221.

It is a cyclic number.

It is not a de Polignac number, because 122221001220221 - 2¹⁴ = 122221001203837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122221001220193 and 122221001220202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221001220281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 580359875 + ... + 580570431.

It is an arithmetic number, because the mean of its divisors is an integer number (4115965043736).

Almost surely, 2^{122221001220221} is an apocalyptic number.

It is an amenable number.

122221001220221 is a deficient number, since it is larger than the sum of its proper divisors (9489880179331).

122221001220221 is a wasteful number, since it uses less digits than its factorization.

122221001220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212069.

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

Adding to 122221001220221 its reverse (122022100122221), we get a palindrome (244243101342442).

The spelling of 122221001220221 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, one million, two hundred twenty thousand, two hundred twenty-one".