2221442312 has 8 divisors (see below), whose sum is σ = 4165204350. Its totient is φ = 1110721152.

The previous prime is 2221442257. The next prime is 2221442339. The reversal of 2221442312 is 2132441222.

It can be written as a sum of positive squares in only one way, i.e., 2194547716 + 26894596 = 46846^2 + 5186^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138840137 + ... + 138840152.

Almost surely, 2^2221442312 is an apocalyptic number.

It is an amenable number.

2221442312 is a deficient number, since it is larger than the sum of its proper divisors (1943762038).

2221442312 is a wasteful number, since it uses less digits than its factorization.

2221442312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277680295 (or 277680291 counting only the distinct ones).

The product of its digits is 1536, while the sum is 23.

The square root of 2221442312 is about 47132.1791560713. The cubic root of 2221442312 is about 1304.8032002621.

Adding to 2221442312 its reverse (2132441222), we get a palindrome (4353883534).

The spelling of 2221442312 in words is "two billion, two hundred twenty-one million, four hundred forty-two thousand, three hundred twelve".