2221011120120 has 128 divisors (see below), whose sum is σ = 7176799203840. Its totient is φ = 546617111040.

The previous prime is 2221011120073. The next prime is 2221011120191. The reversal of 2221011120120 is 210211101222.

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 2221011120120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9252415 + ... + 9489425.

It is an arithmetic number, because the mean of its divisors is an integer number (56068743780).

Almost surely, 2^{2221011120120} is an apocalyptic number.

2221011120120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221011120120 is an abundant number, since it is smaller than the sum of its proper divisors (4955788083720).

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

2221011120120 is a wasteful number, since it uses less digits than its factorization.

2221011120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243045 (or 243041 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2221011120120 its reverse (210211101222), we get a palindrome (2431222221342).

The spelling of 2221011120120 in words is "two trillion, two hundred twenty-one billion, eleven million, one hundred twenty thousand, one hundred twenty".