2212403561 has 2 divisors, whose sum is σ = 2212403562. Its totient is φ = 2212403560.

The previous prime is 2212403549. The next prime is 2212403569. The reversal of 2212403561 is 1653042122.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1932042025 + 280361536 = 43955^2 + 16744^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212403561 - 2²² = 2208209257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2212403561.

It is not a weakly prime, because it can be changed into another prime (2212403569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106201780 + 1106201781.

It is an arithmetic number, because the mean of its divisors is an integer number (1106201781).

Almost surely, 2^2212403561 is an apocalyptic number.

It is an amenable number.

2212403561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212403561 is an equidigital number, since it uses as much as digits as its factorization.

2212403561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2212403561 is about 47036.1941593918. The cubic root of 2212403561 is about 1303.0311048373.

Adding to 2212403561 its reverse (1653042122), we get a palindrome (3865445683).

The spelling of 2212403561 in words is "two billion, two hundred twelve million, four hundred three thousand, five hundred sixty-one".