110021001161 has 2 divisors, whose sum is σ = 110021001162. Its totient is φ = 110021001160.

The previous prime is 110021001151. The next prime is 110021001229. The reversal of 110021001161 is 161100120011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59862919561 + 50158081600 = 244669^2 + 223960^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110021001161 is a prime.

It is not a weakly prime, because it can be changed into another prime (110021001151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55010500580 + 55010500581.

It is an arithmetic number, because the mean of its divisors is an integer number (55010500581).

Almost surely, 2^110021001161 is an apocalyptic number.

It is an amenable number.

110021001161 is a deficient number, since it is larger than the sum of its proper divisors (1).

110021001161 is an equidigital number, since it uses as much as digits as its factorization.

110021001161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 110021001161 its reverse (161100120011), we get a palindrome (271121121172).

The spelling of 110021001161 in words is "one hundred ten billion, twenty-one million, one thousand, one hundred sixty-one".