1212110121112 has 64 divisors (see below), whose sum is σ = 2565082080000. Its totient is φ = 531904087680.

The previous prime is 1212110121107. The next prime is 1212110121121. The reversal of 1212110121112 is 2111210112121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31980589 + ... + 32018467.

It is an arithmetic number, because the mean of its divisors is an integer number (40079407500).

Almost surely, 2^{1212110121112} is an apocalyptic number.

It is an amenable number.

1212110121112 is an abundant number, since it is smaller than the sum of its proper divisors (1352971958888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212110121112 is a wasteful number, since it uses less digits than its factorization.

1212110121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50464 (or 50460 counting only the distinct ones).

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

Adding to 1212110121112 its reverse (2111210112121), we get a palindrome (3323320233233).

The spelling of 1212110121112 in words is "one trillion, two hundred twelve billion, one hundred ten million, one hundred twenty-one thousand, one hundred twelve".