210000121122212 has 24 divisors (see below), whose sum is σ = 370866261320856. Its totient is φ = 104038902775808.

The previous prime is 210000121122163. The next prime is 210000121122221. The reversal of 210000121122212 is 212221121000012.

It can be written as a sum of positive squares in 4 ways, for example, as 51633652150336 + 158366468971876 = 7185656^2 + 12584374^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69851453 + ... + 72795780.

It is an arithmetic number, because the mean of its divisors is an integer number (15452760888369).

Almost surely, 2^{210000121122212} is an apocalyptic number.

It is an amenable number.

210000121122212 is a deficient number, since it is larger than the sum of its proper divisors (160866140198644).

210000121122212 is a wasteful number, since it uses less digits than its factorization.

210000121122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142650607 (or 142650605 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210000121122212 its reverse (212221121000012), we get a palindrome (422221242122224).

The spelling of 210000121122212 in words is "two hundred ten trillion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred twelve".