121222210100221 has 8 divisors (see below), whose sum is σ = 122791632185600. Its totient is φ = 119653662108240.

The previous prime is 121222210100207. The next prime is 121222210100261. The reversal of 121222210100221 is 122001012222121.

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 121222210100221 - 2¹⁷ = 121222209969149 is a prime.

It is a super-3 number, since 3×121222210100221³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222210100261) 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, 218244186 + ... + 218798923.

It is an arithmetic number, because the mean of its divisors is an integer number (15348954023200).

Almost surely, 2^{121222210100221} is an apocalyptic number.

It is an amenable number.

121222210100221 is a deficient number, since it is larger than the sum of its proper divisors (1569422085379).

121222210100221 is an equidigital number, since it uses as much as digits as its factorization.

121222210100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437046699.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121222210100221 its reverse (122001012222121), we get a palindrome (243223222322342).

The spelling of 121222210100221 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, two hundred ten million, one hundred thousand, two hundred twenty-one".