12000001212 has 18 divisors (see below), whose sum is σ = 30333336488. Its totient is φ = 4000000392.

The previous prime is 12000001159. The next prime is 12000001231. The reversal of 12000001212 is 21210000021.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (9).

12000001212 is a modest number, since divided by 1212 gives 120 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 12000001194 and 12000001203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166666648 + ... + 166666719.

Almost surely, 2^12000001212 is an apocalyptic number.

12000001212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12000001212 is an abundant number, since it is smaller than the sum of its proper divisors (18333335276).

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

12000001212 is a wasteful number, since it uses less digits than its factorization.

12000001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333333377 (or 333333372 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12000001212 its reverse (21210000021), we get a palindrome (33210001233).

The spelling of 12000001212 in words is "twelve billion, one thousand, two hundred twelve".