2221012313 has 8 divisors (see below), whose sum is σ = 2392431048. Its totient is φ = 2049675264.

The previous prime is 2221012309. The next prime is 2221012337. The reversal of 2221012313 is 3132101222.

It can be written as a sum of positive squares in 4 ways, for example, as 59413264 + 2161599049 = 7708^2 + 46493^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2221012313 - 2² = 2221012309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2221012291 and 2221012300.

It is not an unprimeable number, because it can be changed into a prime (2221012303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43481 + ... + 79577.

It is an arithmetic number, because the mean of its divisors is an integer number (299053881).

Almost surely, 2^2221012313 is an apocalyptic number.

It is an amenable number.

2221012313 is a deficient number, since it is larger than the sum of its proper divisors (171418735).

2221012313 is a wasteful number, since it uses less digits than its factorization.

2221012313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40843.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2221012313 is about 47127.6173066282. The cubic root of 2221012313 is about 1304.7190056717.

Adding to 2221012313 its reverse (3132101222), we get a palindrome (5353113535).

The spelling of 2221012313 in words is "two billion, two hundred twenty-one million, twelve thousand, three hundred thirteen".