12122010012 has 48 divisors (see below), whose sum is σ = 32539469312. Its totient is φ = 3440491200.

The previous prime is 12122009989. The next prime is 12122010071. The reversal of 12122010012 is 21001022121.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12122010012.

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, 465163 + ... + 490530.

Almost surely, 2^12122010012 is an apocalyptic number.

12122010012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12122010012 is an abundant number, since it is smaller than the sum of its proper divisors (20417459300).

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

12122010012 is a wasteful number, since it uses less digits than its factorization.

12122010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955858 (or 955856 counting only the distinct ones).

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

Subtracting from 12122010012 its sum of digits (12), we obtain a square (12122010000 = 110100²).

Adding to 12122010012 its reverse (21001022121), we get a palindrome (33123032133).

The spelling of 12122010012 in words is "twelve billion, one hundred twenty-two million, ten thousand, twelve".