110120021012081 has 2 divisors, whose sum is σ = 110120021012082. Its totient is φ = 110120021012080.

The previous prime is 110120021011993. The next prime is 110120021012129. The reversal of 110120021012081 is 180210120021011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61371697012081 + 48748324000000 = 7834009^2 + 6982000^2 .

It is an emirp because it is prime and its reverse (180210120021011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110120021012081 is a prime.

It is a super-2 number, since 2×110120021012081² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (110120021032081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55060010506040 + 55060010506041.

It is an arithmetic number, because the mean of its divisors is an integer number (55060010506041).

Almost surely, 2^{110120021012081} is an apocalyptic number.

It is an amenable number.

110120021012081 is a deficient number, since it is larger than the sum of its proper divisors (1).

110120021012081 is an equidigital number, since it uses as much as digits as its factorization.

110120021012081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 110120021012081 its reverse (180210120021011), we get a palindrome (290330141033092).

The spelling of 110120021012081 in words is "one hundred ten trillion, one hundred twenty billion, twenty-one million, twelve thousand, eighty-one".