110101010211221 has 4 divisors (see below), whose sum is σ = 110101242972192. Its totient is φ = 110100777450252.

The previous prime is 110101010211187. The next prime is 110101010211251. The reversal of 110101010211221 is 122112010101011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110101010211221 is a prime.

It is a super-2 number, since 2×110101010211221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 110101010211196 and 110101010211205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110101010211251) 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, 115669505 + ... + 116617478.

It is an arithmetic number, because the mean of its divisors is an integer number (27525310743048).

Almost surely, 2^{110101010211221} is an apocalyptic number.

It is an amenable number.

110101010211221 is a deficient number, since it is larger than the sum of its proper divisors (232760971).

110101010211221 is an equidigital number, since it uses as much as digits as its factorization.

110101010211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232760970.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 110101010211221 its reverse (122112010101011), we get a palindrome (232213020312232).

The spelling of 110101010211221 in words is "one hundred ten trillion, one hundred one billion, ten million, two hundred eleven thousand, two hundred twenty-one".