2224045661 has 2 divisors, whose sum is σ = 2224045662. Its totient is φ = 2224045660.

The previous prime is 2224045657. The next prime is 2224045693. The reversal of 2224045661 is 1665404222.

It is an a-pointer prime, because the next prime (2224045693) can be obtained adding 2224045661 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1663824100 + 560221561 = 40790^2 + 23669^2 .

It is a cyclic number.

It is not a de Polignac number, because 2224045661 - 2² = 2224045657 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2224041661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1112022830 + 1112022831.

It is an arithmetic number, because the mean of its divisors is an integer number (1112022831).

Almost surely, 2^2224045661 is an apocalyptic number.

It is an amenable number.

2224045661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2224045661 is an equidigital number, since it uses as much as digits as its factorization.

2224045661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 2224045661 is about 47159.7886021555. The cubic root of 2224045661 is about 1305.3127088825.

Adding to 2224045661 its reverse (1665404222), we get a palindrome (3889449883).

The spelling of 2224045661 in words is "two billion, two hundred twenty-four million, forty-five thousand, six hundred sixty-one".