110220311231221 has 2 divisors, whose sum is σ = 110220311231222. Its totient is φ = 110220311231220.

The previous prime is 110220311231213. The next prime is 110220311231237. The reversal of 110220311231221 is 122132113022011.

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., 109129654752196 + 1090656479025 = 10446514^2 + 1044345^2 .

It is a cyclic number.

It is not a de Polignac number, because 110220311231221 - 2³ = 110220311231213 is a prime.

It is a super-2 number, since 2×110220311231221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 110220311231192 and 110220311231201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110220312231221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55110155615610 + 55110155615611.

It is an arithmetic number, because the mean of its divisors is an integer number (55110155615611).

Almost surely, 2^{110220311231221} is an apocalyptic number.

It is an amenable number.

110220311231221 is a deficient number, since it is larger than the sum of its proper divisors (1).

110220311231221 is an equidigital number, since it uses as much as digits as its factorization.

110220311231221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 110220311231221 its reverse (122132113022011), we get a palindrome (232352424253232).

The spelling of 110220311231221 in words is "one hundred ten trillion, two hundred twenty billion, three hundred eleven million, two hundred thirty-one thousand, two hundred twenty-one".