2012022121212 has 72 divisors (see below), whose sum is σ = 5116279612080. Its totient is φ = 666679265280.

The previous prime is 2012022121211. The next prime is 2012022121217. The reversal of 2012022121212 is 2121212202102.

It is a happy number.

2012022121212 is a `hidden beast` number, since 201 + 20 + 221 + 212 + 12 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012022121211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8857714 + ... + 9082022.

Almost surely, 2^{2012022121212} is an apocalyptic number.

It is an amenable number.

2012022121212 is an abundant number, since it is smaller than the sum of its proper divisors (3104257490868).

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

2012022121212 is a wasteful number, since it uses less digits than its factorization.

2012022121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225803 (or 225798 counting only the distinct ones).

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

Adding to 2012022121212 its reverse (2121212202102), we get a palindrome (4133234323314).

The spelling of 2012022121212 in words is "two trillion, twelve billion, twenty-two million, one hundred twenty-one thousand, two hundred twelve".