2220111121212 has 144 divisors (see below), whose sum is σ = 6423852183840. Its totient is φ = 642013433856.

The previous prime is 2220111121147. The next prime is 2220111121271. The reversal of 2220111121212 is 2121211110222.

2220111121212 is a `hidden beast` number, since 2 + 220 + 111 + 121 + 212 = 666.

2220111121212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2149873 + ... + 3010344.

It is an arithmetic number, because the mean of its divisors is an integer number (44610084610).

Almost surely, 2^{2220111121212} is an apocalyptic number.

It is an amenable number.

2220111121212 is an abundant number, since it is smaller than the sum of its proper divisors (4203741062628).

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

2220111121212 is a wasteful number, since it uses less digits than its factorization.

2220111121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5160300 (or 5160295 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2220111121212 its reverse (2121211110222), we get a palindrome (4341322231434).

The spelling of 2220111121212 in words is "two trillion, two hundred twenty billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twelve".