2221103120 has 40 divisors (see below), whose sum is σ = 5215213080. Its totient is φ = 879641600.

The previous prime is 2221103119. The next prime is 2221103149. The reversal of 2221103120 is 213011222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1317980416 + 903122704 = 36304^2 + 30052^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 2221103095 and 2221103104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129365 + ... + 145524.

It is an arithmetic number, because the mean of its divisors is an integer number (130380327).

Almost surely, 2^2221103120 is an apocalyptic number.

2221103120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221103120 is an abundant number, since it is smaller than the sum of its proper divisors (2994109960).

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

2221103120 is a wasteful number, since it uses less digits than its factorization.

2221103120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275003 (or 274997 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2221103120 is about 47128.5807127692. The cubic root of 2221103120 is about 1304.7367867534.

Adding to 2221103120 its reverse (213011222), we get a palindrome (2434114342).

The spelling of 2221103120 in words is "two billion, two hundred twenty-one million, one hundred three thousand, one hundred twenty".