110121100021 has 8 divisors (see below), whose sum is σ = 111253535064. Its totient is φ = 108989491200.

The previous prime is 110121100009. The next prime is 110121100027. The reversal of 110121100021 is 120001121011.

It can be written as a sum of positive squares in 4 ways, for example, as 17932959396 + 92188140625 = 133914^2 + 303625^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 110121100021 - 2²⁷ = 109986882293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110121099980 and 110121100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110121100027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63181 + ... + 473533.

It is an arithmetic number, because the mean of its divisors is an integer number (13906691883).

Almost surely, 2^110121100021 is an apocalyptic number.

It is an amenable number.

110121100021 is a deficient number, since it is larger than the sum of its proper divisors (1132435043).

110121100021 is a wasteful number, since it uses less digits than its factorization.

110121100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413111.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 110121100021 its reverse (120001121011), we get a palindrome (230122221032).

The spelling of 110121100021 in words is "one hundred ten billion, one hundred twenty-one million, one hundred thousand, twenty-one".