121111101212 has 12 divisors (see below), whose sum is σ = 211953924000. Its totient is φ = 60552837216.

The previous prime is 121111101203. The next prime is 121111101271. The reversal of 121111101212 is 212101111121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576212 + ... + 757787.

It is an arithmetic number, because the mean of its divisors is an integer number (17662827000).

Almost surely, 2^121111101212 is an apocalyptic number.

It is an amenable number.

121111101212 is a deficient number, since it is larger than the sum of its proper divisors (90842822788).

121111101212 is a wasteful number, since it uses less digits than its factorization.

121111101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356700 (or 1356698 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121111101212 its reverse (212101111121), we get a palindrome (333212212333).

Subtracting 121111101212 from its reverse (212101111121), we obtain a palindrome (90990009909).

The spelling of 121111101212 in words is "one hundred twenty-one billion, one hundred eleven million, one hundred one thousand, two hundred twelve".