12212112220002 has 24 divisors (see below), whose sum is σ = 26637157532700. Its totient is φ = 4043383910880.

The previous prime is 12212112219959. The next prime is 12212112220013. The reversal of 12212112220002 is 20002221121221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8653075275321 + 3559036944681 = 2941611^2 + 1886541^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2276677449 + ... + 2276682812.

Almost surely, 2^{12212112220002} is an apocalyptic number.

12212112220002 is an abundant number, since it is smaller than the sum of its proper divisors (14425045312698).

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

12212112220002 is a wasteful number, since it uses less digits than its factorization.

12212112220002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4553360418 (or 4553360415 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12212112220002 its reverse (20002221121221), we get a palindrome (32214333341223).

The spelling of 12212112220002 in words is "twelve trillion, two hundred twelve billion, one hundred twelve million, two hundred twenty thousand, two".