1212000100112 has 40 divisors (see below), whose sum is σ = 2487124208952. Its totient is φ = 570182860800.

The previous prime is 1212000100099. The next prime is 1212000100133. The reversal of 1212000100112 is 2110010002121.

It can be written as a sum of positive squares in 4 ways, for example, as 562854055696 + 649146044416 = 750236^2 + 805696^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1212000100093 and 1212000100102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251312 + ... + 1577072.

Almost surely, 2^{1212000100112} is an apocalyptic number.

It is an amenable number.

1212000100112 is an abundant number, since it is smaller than the sum of its proper divisors (1275124108840).

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

1212000100112 is a wasteful number, since it uses less digits than its factorization.

1212000100112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329147 (or 1329141 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1212000100112 its reverse (2110010002121), we get a palindrome (3322010102233).

The spelling of 1212000100112 in words is "one trillion, two hundred twelve billion, one hundred thousand, one hundred twelve".