12120001212 has 48 divisors (see below), whose sum is σ = 31156401024. Its totient is φ = 3636360000.

The previous prime is 12120001121. The next prime is 12120001261. The reversal of 12120001212 is 21210002121.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 441214 + ... + 467877.

It is an arithmetic number, because the mean of its divisors is an integer number (649091688).

Almost surely, 2^12120001212 is an apocalyptic number.

12120001212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12120001212 is an abundant number, since it is smaller than the sum of its proper divisors (19036399812).

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

12120001212 is a wasteful number, since it uses less digits than its factorization.

12120001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909210 (or 909208 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

12120001212 divided by its sum of digits (12) gives a palindrome (1010000101).

Adding to 12120001212 its reverse (21210002121), we get a palindrome (33330003333).

Subtracting 12120001212 from its reverse (21210002121), we obtain a palindrome (9090000909).

The spelling of 12120001212 in words is "twelve billion, one hundred twenty million, one thousand, two hundred twelve".