2220132463561 has 2 divisors, whose sum is σ = 2220132463562. Its totient is φ = 2220132463560.

The previous prime is 2220132463517. The next prime is 2220132463613. The reversal of 2220132463561 is 1653642310222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1560250810000 + 659881653561 = 1249100^2 + 812331^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220132463561 - 2²⁵ = 2220098909129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2220132463561.

It is not a weakly prime, because it can be changed into another prime (2220132467561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110066231780 + 1110066231781.

It is an arithmetic number, because the mean of its divisors is an integer number (1110066231781).

Almost surely, 2^{2220132463561} is an apocalyptic number.

It is an amenable number.

2220132463561 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220132463561 is an equidigital number, since it uses as much as digits as its factorization.

2220132463561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 2220132463561 its reverse (1653642310222), we get a palindrome (3873774773783).

The spelling of 2220132463561 in words is "two trillion, two hundred twenty billion, one hundred thirty-two million, four hundred sixty-three thousand, five hundred sixty-one".