110201211221161 has 2 divisors, whose sum is σ = 110201211221162. Its totient is φ = 110201211221160.

The previous prime is 110201211221131. The next prime is 110201211221201. The reversal of 110201211221161 is 161122112102011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56722061274025 + 53479149947136 = 7531405^2 + 7312944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110201211221161 is a prime.

It is a super-2 number, since 2×110201211221161² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (110201211221131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55100605610580 + 55100605610581.

It is an arithmetic number, because the mean of its divisors is an integer number (55100605610581).

Almost surely, 2^{110201211221161} is an apocalyptic number.

It is an amenable number.

110201211221161 is a deficient number, since it is larger than the sum of its proper divisors (1).

110201211221161 is an equidigital number, since it uses as much as digits as its factorization.

110201211221161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 22.

Adding to 110201211221161 its reverse (161122112102011), we get a palindrome (271323323323172).

The spelling of 110201211221161 in words is "one hundred ten trillion, two hundred one billion, two hundred eleven million, two hundred twenty-one thousand, one hundred sixty-one".