110100210212221 has 2 divisors, whose sum is σ = 110100210212222. Its totient is φ = 110100210212220.

The previous prime is 110100210212207. The next prime is 110100210212243. The reversal of 110100210212221 is 122212012001011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94927237649721 + 15172972562500 = 9743061^2 + 3895250^2 .

It is a cyclic number.

It is not a de Polignac number, because 110100210212221 - 2⁷ = 110100210212093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 110100210212195 and 110100210212204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110100210242221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55050105106110 + 55050105106111.

It is an arithmetic number, because the mean of its divisors is an integer number (55050105106111).

Almost surely, 2^{110100210212221} is an apocalyptic number.

It is an amenable number.

110100210212221 is a deficient number, since it is larger than the sum of its proper divisors (1).

110100210212221 is an equidigital number, since it uses as much as digits as its factorization.

110100210212221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 110100210212221 its reverse (122212012001011), we get a palindrome (232312222213232).

The spelling of 110100210212221 in words is "one hundred ten trillion, one hundred billion, two hundred ten million, two hundred twelve thousand, two hundred twenty-one".