121222221202 has 8 divisors (see below), whose sum is σ = 181847517516. Its totient is φ = 60606382032.

The previous prime is 121222221199. The next prime is 121222221209. The reversal of 121222221202 is 202122222121.

It can be written as a sum of positive squares in 2 ways, for example, as 118149625441 + 3072595761 = 343729^2 + 55431^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 121222221202.

It is not an unprimeable number, because it can be changed into a prime (121222221209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2332153 + ... + 2383564.

Almost surely, 2^121222221202 is an apocalyptic number.

121222221202 is a deficient number, since it is larger than the sum of its proper divisors (60625296314).

121222221202 is a wasteful number, since it uses less digits than its factorization.

121222221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4728572.

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

Adding to 121222221202 its reverse (202122222121), we get a palindrome (323344443323).

The spelling of 121222221202 in words is "one hundred twenty-one billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred two".