121202222000221 has 16 divisors (see below), whose sum is σ = 123776611061760. Its totient is φ = 118651571763120.

The previous prime is 121202222000159. The next prime is 121202222000267. The reversal of 121202222000221 is 122000222202121.

It is a cyclic number.

It is not a de Polignac number, because 121202222000221 - 2²³ = 121202213611613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121202222000291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8392870 + ... + 17687416.

It is an arithmetic number, because the mean of its divisors is an integer number (7736038191360).

Almost surely, 2^{121202222000221} is an apocalyptic number.

It is an amenable number.

121202222000221 is a deficient number, since it is larger than the sum of its proper divisors (2574389061539).

121202222000221 is a wasteful number, since it uses less digits than its factorization.

121202222000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9295824.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 121202222000221 its reverse (122000222202121), we get a palindrome (243202444202342).

The spelling of 121202222000221 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred twenty-two million, two hundred twenty-one", and thus it is an aban number.