1106701021661 has 2 divisors, whose sum is σ = 1106701021662. Its totient is φ = 1106701021660.

The previous prime is 1106701021561. The next prime is 1106701021687. The reversal of 1106701021661 is 1661201076011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 791833022500 + 314867999161 = 889850^2 + 561131^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1106701021661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1106701021561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 553350510830 + 553350510831.

It is an arithmetic number, because the mean of its divisors is an integer number (553350510831).

Almost surely, 2^{1106701021661} is an apocalyptic number.

It is an amenable number.

1106701021661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1106701021661 is an equidigital number, since it uses as much as digits as its factorization.

1106701021661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 32.

Adding to 1106701021661 its reverse (1661201076011), we get a palindrome (2767902097672).

The spelling of 1106701021661 in words is "one trillion, one hundred six billion, seven hundred one million, twenty-one thousand, six hundred sixty-one".