110221210121 has 16 divisors (see below), whose sum is σ = 126980904960. Its totient is φ = 94689759120.

The previous prime is 110221210111. The next prime is 110221210153. The reversal of 110221210121 is 121012122011.

It is not a de Polignac number, because 110221210121 - 2¹⁰ = 110221209097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110221210096 and 110221210105.

It is not an unprimeable number, because it can be changed into a prime (110221210111) 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, 2603441 + ... + 2645438.

It is an arithmetic number, because the mean of its divisors is an integer number (7936306560).

Almost surely, 2^110221210121 is an apocalyptic number.

110221210121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

110221210121 is a deficient number, since it is larger than the sum of its proper divisors (16759694839).

110221210121 is a wasteful number, since it uses less digits than its factorization.

110221210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5248996.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 110221210121 its reverse (121012122011), we get a palindrome (231233332132).

The spelling of 110221210121 in words is "one hundred ten billion, two hundred twenty-one million, two hundred ten thousand, one hundred twenty-one".