121212120202 has 8 divisors (see below), whose sum is σ = 183618360612. Its totient is φ = 60006000000.

The previous prime is 121212120191. The next prime is 121212120221. The reversal of 121212120202 is 202021212121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 103362893001 + 17849227201 = 321501^2 + 133601^2 .

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

It is an unprimeable number.

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, 300029799 + ... + 300030202.

Almost surely, 2^121212120202 is an apocalyptic number.

121212120202 is a deficient number, since it is larger than the sum of its proper divisors (62406240410).

121212120202 is a wasteful number, since it uses less digits than its factorization.

121212120202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600060104.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121212120202 its reverse (202021212121), we get a palindrome (323233332323).

The spelling of 121212120202 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred twenty thousand, two hundred two".