121221202 has 8 divisors (see below), whose sum is σ = 183441276. Its totient is φ = 60074112.

The previous prime is 121221181. The next prime is 121221209. The reversal of 121221202 is 202122121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 105452361 + 15768841 = 10269^2 + 3971^2 .

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

It is not an unprimeable number, because it can be changed into a prime (121221209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267963 + ... + 268414.

Almost surely, 2^121221202 is an apocalyptic number.

121221202 is a deficient number, since it is larger than the sum of its proper divisors (62220074).

121221202 is a wasteful number, since it uses less digits than its factorization.

121221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536492.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 121221202 is about 11010.0500452995. The cubic root of 121221202 is about 494.9099615168.

Adding to 121221202 its reverse (202122121), we get a palindrome (323343323).

The spelling of 121221202 in words is "one hundred twenty-one million, two hundred twenty-one thousand, two hundred two".