110310131221 has 2 divisors, whose sum is σ = 110310131222. Its totient is φ = 110310131220.

The previous prime is 110310131213. The next prime is 110310131231. The reversal of 110310131221 is 122131013011.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101242330596 + 9067800625 = 318186^2 + 95225^2 .

It is a cyclic number.

It is not a de Polignac number, because 110310131221 - 2³ = 110310131213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 110310131195 and 110310131204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110310131231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55155065610 + 55155065611.

It is an arithmetic number, because the mean of its divisors is an integer number (55155065611).

Almost surely, 2^110310131221 is an apocalyptic number.

It is an amenable number.

110310131221 is a deficient number, since it is larger than the sum of its proper divisors (1).

110310131221 is an equidigital number, since it uses as much as digits as its factorization.

110310131221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 110310131221 its reverse (122131013011), we get a palindrome (232441144232).

The spelling of 110310131221 in words is "one hundred ten billion, three hundred ten million, one hundred thirty-one thousand, two hundred twenty-one".