121101211111012 has 24 divisors (see below), whose sum is σ = 231216892885440. Its totient is φ = 55040368937760.

The previous prime is 121101211111007. The next prime is 121101211111021. The reversal of 121101211111012 is 210111112101121.

It is a super-3 number, since 3×121101211111012³ (a number of 43 digits) contains 333 as substring.

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, 140468187 + ... + 141327682.

It is an arithmetic number, because the mean of its divisors is an integer number (9634037203560).

Almost surely, 2^{121101211111012} is an apocalyptic number.

It is an amenable number.

121101211111012 is a deficient number, since it is larger than the sum of its proper divisors (110115681774428).

121101211111012 is a wasteful number, since it uses less digits than its factorization.

121101211111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281805651 (or 281805649 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 121101211111012 its reverse (210111112101121), we get a palindrome (331212323212133).

The spelling of 121101211111012 in words is "one hundred twenty-one trillion, one hundred one billion, two hundred eleven million, one hundred eleven thousand, twelve".