121212222112202 has 32 divisors (see below), whose sum is σ = 204477340999680. Its totient is φ = 53469911151360.

The previous prime is 121212222112187. The next prime is 121212222112229. The reversal of 121212222112202 is 202211222212121.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78475199 + ... + 80004882.

It is an arithmetic number, because the mean of its divisors is an integer number (6389916906240).

Almost surely, 2^{121212222112202} is an apocalyptic number.

121212222112202 is a deficient number, since it is larger than the sum of its proper divisors (83265118887478).

121212222112202 is a wasteful number, since it uses less digits than its factorization.

121212222112202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158481398.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 121212222112202 its reverse (202211222212121), we get a palindrome (323423444324323).

The spelling of 121212222112202 in words is "one hundred twenty-one trillion, two hundred twelve billion, two hundred twenty-two million, one hundred twelve thousand, two hundred two".