2200109995661 has 2 divisors, whose sum is σ = 2200109995662. Its totient is φ = 2200109995660.

The previous prime is 2200109995639. The next prime is 2200109995711. The reversal of 2200109995661 is 1665999010022.

It is an a-pointer prime, because the next prime (2200109995711) can be obtained adding 2200109995661 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1941268170436 + 258841825225 = 1393294^2 + 508765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2200109995661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2200109955661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100054997830 + 1100054997831.

It is an arithmetic number, because the mean of its divisors is an integer number (1100054997831).

Almost surely, 2^{2200109995661} is an apocalyptic number.

It is an amenable number.

2200109995661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2200109995661 is an equidigital number, since it uses as much as digits as its factorization.

2200109995661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 50.

The spelling of 2200109995661 in words is "two trillion, two hundred billion, one hundred nine million, nine hundred ninety-five thousand, six hundred sixty-one".