121021212222212 has 12 divisors (see below), whose sum is σ = 211838364369996. Its totient is φ = 60495965259360.

The previous prime is 121021212222179. The next prime is 121021212222223. The reversal of 121021212222212 is 212222212120121.

It can be written as a sum of positive squares in 2 ways, for example, as 79138388992576 + 41882823229636 = 8895976^2 + 6471694^2 .

It is a super-2 number, since 2×121021212222212² (a number of 29 digits) contains 22 as substring.

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, 3660194339 + ... + 3660227402.

It is an arithmetic number, because the mean of its divisors is an integer number (17653197030833).

Almost surely, 2^{121021212222212} is an apocalyptic number.

It is an amenable number.

121021212222212 is a deficient number, since it is larger than the sum of its proper divisors (90817152147784).

121021212222212 is a wasteful number, since it uses less digits than its factorization.

121021212222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7320425878 (or 7320425876 counting only the distinct ones).

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

Adding to 121021212222212 its reverse (212222212120121), we get a palindrome (333243424342333).

The spelling of 121021212222212 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twelve".