2222121000120 has 128 divisors (see below), whose sum is σ = 7637329382400. Its totient is φ = 506671451136.

The previous prime is 2222121000067. The next prime is 2222121000133. The reversal of 2222121000120 is 210001212222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2222121000120.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2890404 + ... + 3577523.

It is an arithmetic number, because the mean of its divisors is an integer number (59666635800).

Almost surely, 2^{2222121000120} is an apocalyptic number.

2222121000120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2222121000120 is an abundant number, since it is smaller than the sum of its proper divisors (5415208382280).

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

2222121000120 is a wasteful number, since it uses less digits than its factorization.

2222121000120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6468357 (or 6468353 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2222121000120 its reverse (210001212222), we get a palindrome (2432122212342).

The spelling of 2222121000120 in words is "two trillion, two hundred twenty-two billion, one hundred twenty-one million, one hundred twenty", and thus it is an aban number.