121112122101212 has 12 divisors (see below), whose sum is σ = 231214051284216. Its totient is φ = 55050964591440.

The previous prime is 121112122101199. The next prime is 121112122101241. The reversal of 121112122101212 is 212101221211121.

It is a happy number.

It is a super-2 number, since 2×121112122101212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 1376274114743 + ... + 1376274114830.

It is an arithmetic number, because the mean of its divisors is an integer number (19267837607018).

Almost surely, 2^{121112122101212} is an apocalyptic number.

It is an amenable number.

121112122101212 is a deficient number, since it is larger than the sum of its proper divisors (110101929183004).

121112122101212 is a wasteful number, since it uses less digits than its factorization.

121112122101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2752548229588 (or 2752548229586 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 121112122101212 its reverse (212101221211121), we get a palindrome (333213343312333).

The spelling of 121112122101212 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred twenty-two million, one hundred one thousand, two hundred twelve".