121101211101212 has 24 divisors (see below), whose sum is σ = 214008625180896. Its totient is φ = 59956021274688.

The previous prime is 121101211101203. The next prime is 121101211101223. The reversal of 121101211101212 is 212101112101121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12771803 + ... + 20132594.

It is an arithmetic number, because the mean of its divisors is an integer number (8917026049204).

Almost surely, 2^{121101211101212} is an apocalyptic number.

It is an amenable number.

121101211101212 is a deficient number, since it is larger than the sum of its proper divisors (92907414079684).

121101211101212 is a wasteful number, since it uses less digits than its factorization.

121101211101212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32913437 (or 32913435 counting only the distinct ones).

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

Adding to 121101211101212 its reverse (212101112101121), we get a palindrome (333202323202333).

Subtracting 121101211101212 from its reverse (212101112101121), we obtain a palindrome (90999900999909).

The spelling of 121101211101212 in words is "one hundred twenty-one trillion, one hundred one billion, two hundred eleven million, one hundred one thousand, two hundred twelve".