110101122122221 has 16 divisors (see below), whose sum is σ = 110690595025920. Its totient is φ = 109512748200240.

The previous prime is 110101122122209. The next prime is 110101122122231. The reversal of 110101122122221 is 122221221101011.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 110101122122221 - 2¹⁹ = 110101121597933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110101122122231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2676819826 + ... + 2676860956.

It is an arithmetic number, because the mean of its divisors is an integer number (6918162189120).

Almost surely, 2^{110101122122221} is an apocalyptic number.

It is an amenable number.

110101122122221 is a deficient number, since it is larger than the sum of its proper divisors (589472903699).

110101122122221 is a wasteful number, since it uses less digits than its factorization.

110101122122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54144.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 110101122122221 its reverse (122221221101011), we get a palindrome (232322343223232).

The spelling of 110101122122221 in words is "one hundred ten trillion, one hundred one billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty-one".