110021220077 has 2 divisors, whose sum is σ = 110021220078. Its totient is φ = 110021220076.

The previous prime is 110021219999. The next prime is 110021220097. The reversal of 110021220077 is 770022120011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104423337316 + 5597882761 = 323146^2 + 74819^2 .

It is an emirp because it is prime and its reverse (770022120011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 110021220077 - 2⁸ = 110021219821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110021220097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55010610038 + 55010610039.

It is an arithmetic number, because the mean of its divisors is an integer number (55010610039).

Almost surely, 2^110021220077 is an apocalyptic number.

It is an amenable number.

110021220077 is a deficient number, since it is larger than the sum of its proper divisors (1).

110021220077 is an equidigital number, since it uses as much as digits as its factorization.

110021220077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 392, while the sum is 23.

Adding to 110021220077 its reverse (770022120011), we get a palindrome (880043340088).

The spelling of 110021220077 in words is "one hundred ten billion, twenty-one million, two hundred twenty thousand, seventy-seven".