110121121121221 has 16 divisors (see below), whose sum is σ = 126583977147264. Its totient is φ = 93841114636224.

The previous prime is 110121121121171. The next prime is 110121121121279. The reversal of 110121121121221 is 122121121121011.

It is a cyclic number.

It is not a de Polignac number, because 110121121121221 - 2⁷ = 110121121121093 is a prime.

It is a super-2 number, since 2×110121121121221² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110121121181221) 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, 39552850 + ... + 42245356.

It is an arithmetic number, because the mean of its divisors is an integer number (7911498571704).

Almost surely, 2^{110121121121221} is an apocalyptic number.

It is an amenable number.

110121121121221 is a deficient number, since it is larger than the sum of its proper divisors (16462856026043).

110121121121221 is a wasteful number, since it uses less digits than its factorization.

110121121121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726460.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 110121121121221 its reverse (122121121121011), we get a palindrome (232242242242232).

The spelling of 110121121121221 in words is "one hundred ten trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred twenty-one".