121212021001112 has 8 divisors (see below), whose sum is σ = 227272539377100. Its totient is φ = 60606010500552.

The previous prime is 121212021001037. The next prime is 121212021001117. The reversal of 121212021001112 is 211100120212121.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212021001117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7575751312562 + ... + 7575751312577.

Almost surely, 2^{121212021001112} is an apocalyptic number.

It is an amenable number.

121212021001112 is a deficient number, since it is larger than the sum of its proper divisors (106060518375988).

121212021001112 is a wasteful number, since it uses less digits than its factorization.

121212021001112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15151502625145 (or 15151502625141 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121212021001112 its reverse (211100120212121), we get a palindrome (332312141213233).

The spelling of 121212021001112 in words is "one hundred twenty-one trillion, two hundred twelve billion, twenty-one million, one thousand, one hundred twelve".