121101211121012 has 12 divisors (see below), whose sum is σ = 212015680748676. Its totient is φ = 60525302335680.

The previous prime is 121101211120979. The next prime is 121101211121027. The reversal of 121101211121012 is 210121112101121.

It can be written as a sum of positive squares in 2 ways, for example, as 13606699503076 + 107494511617936 = 3688726^2 + 10367956^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6325795439 + ... + 6325814582.

It is an arithmetic number, because the mean of its divisors is an integer number (17667973395723).

Almost surely, 2^{121101211121012} is an apocalyptic number.

It is an amenable number.

121101211121012 is a deficient number, since it is larger than the sum of its proper divisors (90914469627664).

121101211121012 is a wasteful number, since it uses less digits than its factorization.

121101211121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12651612418 (or 12651612416 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121101211121012 its reverse (210121112101121), we get a palindrome (331222323222133).

The spelling of 121101211121012 in words is "one hundred twenty-one trillion, one hundred one billion, two hundred eleven million, one hundred twenty-one thousand, twelve".