121212122010202 has 64 divisors (see below), whose sum is σ = 204776207400960. Its totient is φ = 53570243073600.

The previous prime is 121212122010181. The next prime is 121212122010209. The reversal of 121212122010202 is 202010221212121.

It is a super-2 number, since 2×121212122010202² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 121212122010202.

It is not an unprimeable number, because it can be changed into a prime (121212122010209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12628449 + ... + 20047492.

It is an arithmetic number, because the mean of its divisors is an integer number (3199628240640).

Almost surely, 2^{121212122010202} is an apocalyptic number.

121212122010202 is a deficient number, since it is larger than the sum of its proper divisors (83564085390758).

121212122010202 is a wasteful number, since it uses less digits than its factorization.

121212122010202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32676107.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121212122010202 its reverse (202010221212121), we get a palindrome (323222343222323).

The spelling of 121212122010202 in words is "one hundred twenty-one trillion, two hundred twelve billion, one hundred twenty-two million, ten thousand, two hundred two".