121212101212 has 24 divisors (see below), whose sum is σ = 219518661600. Its totient is φ = 58494063936.

The previous prime is 121212101209. The next prime is 121212101243. The reversal of 121212101212 is 212101212121.

121212101212 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an alternating number because its digits alternate between odd and even.

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 7 ways as a sum of consecutive naturals, for example, 112714 + ... + 505102.

It is an arithmetic number, because the mean of its divisors is an integer number (9146610900).

Almost surely, 2^121212101212 is an apocalyptic number.

It is an amenable number.

121212101212 is a deficient number, since it is larger than the sum of its proper divisors (98306560388).

121212101212 is a wasteful number, since it uses less digits than its factorization.

121212101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395085 (or 395083 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121212101212 its reverse (212101212121), we get a palindrome (333313313333).

It can be divided in two parts, 121 and 212101212, that multiplied together give a palindrome (25664246652).

The spelling of 121212101212 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred one thousand, two hundred twelve".