121212012210220 has 12 divisors (see below), whose sum is σ = 254545225641504. Its totient is φ = 48484804884080.

The previous prime is 121212012210199. The next prime is 121212012210239. The reversal of 121212012210220 is 22012210212121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3030300305236 + ... + 3030300305275.

It is an arithmetic number, because the mean of its divisors is an integer number (21212102136792).

Almost surely, 2^{121212012210220} is an apocalyptic number.

121212012210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121212012210220 is an abundant number, since it is smaller than the sum of its proper divisors (133333213431284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121212012210220 is a wasteful number, since it uses less digits than its factorization.

121212012210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060600610520 (or 6060600610518 counting only the distinct ones).

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

Adding to 121212012210220 its reverse (22012210212121), we get a palindrome (143224222422341).

The spelling of 121212012210220 in words is "one hundred twenty-one trillion, two hundred twelve billion, twelve million, two hundred ten thousand, two hundred twenty".