1212112003212 has 144 divisors (see below), whose sum is σ = 3573277058400. Its totient is φ = 354640809600.

The previous prime is 1212112003211. The next prime is 1212112003259. The reversal of 1212112003212 is 2123002112121.

1212112003212 is a `hidden beast` number, since 121 + 21 + 1 + 200 + 321 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1212112003211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1220239 + ... + 1978182.

Almost surely, 2^{1212112003212} is an apocalyptic number.

1212112003212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212112003212 is an abundant number, since it is smaller than the sum of its proper divisors (2361165055188).

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

1212112003212 is a wasteful number, since it uses less digits than its factorization.

1212112003212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3198485 (or 3198466 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1212112003212 its reverse (2123002112121), we get a palindrome (3335114115333).

The spelling of 1212112003212 in words is "one trillion, two hundred twelve billion, one hundred twelve million, three thousand, two hundred twelve".