2223150365561 has 2 divisors, whose sum is σ = 2223150365562. Its totient is φ = 2223150365560.

The previous prime is 2223150365543. The next prime is 2223150365587. The reversal of 2223150365561 is 1655630513222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1977907517161 + 245242848400 = 1406381^2 + 495220^2 .

It is a cyclic number.

It is not a de Polignac number, because 2223150365561 - 2²⁶ = 2223083256697 is a prime.

It is not a weakly prime, because it can be changed into another prime (2223110365561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1111575182780 + 1111575182781.

It is an arithmetic number, because the mean of its divisors is an integer number (1111575182781).

Almost surely, 2^{2223150365561} is an apocalyptic number.

It is an amenable number.

2223150365561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2223150365561 is an equidigital number, since it uses as much as digits as its factorization.

2223150365561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 41.

Adding to 2223150365561 its reverse (1655630513222), we get a palindrome (3878780878783).

The spelling of 2223150365561 in words is "two trillion, two hundred twenty-three billion, one hundred fifty million, three hundred sixty-five thousand, five hundred sixty-one".