110102100011221 has 4 divisors (see below), whose sum is σ = 110102162866444. Its totient is φ = 110102037156000.

The previous prime is 110102100011203. The next prime is 110102100011227. The reversal of 110102100011221 is 122110001201011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48679784868100 + 61422315143121 = 6977090^2 + 7837239^2 .

It is a cyclic number.

It is not a de Polignac number, because 110102100011221 - 2¹¹ = 110102100009173 is a prime.

It is a super-2 number, since 2×110102100011221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110102100011227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28722480 + ... + 32329321.

It is an arithmetic number, because the mean of its divisors is an integer number (27525540716611).

Almost surely, 2^{110102100011221} is an apocalyptic number.

It is an amenable number.

110102100011221 is a deficient number, since it is larger than the sum of its proper divisors (62855223).

110102100011221 is an equidigital number, since it uses as much as digits as its factorization.

110102100011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62855222.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 110102100011221 its reverse (122110001201011), we get a palindrome (232212101212232).

The spelling of 110102100011221 in words is "one hundred ten trillion, one hundred two billion, one hundred million, eleven thousand, two hundred twenty-one".