110120002021 has 4 divisors (see below), whose sum is σ = 113917243500. Its totient is φ = 106322760544.

The previous prime is 110120002019. The next prime is 110120002073. The reversal of 110120002021 is 120200021011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120200021011 = 7 ⋅17171431573.

It can be written as a sum of positive squares in 2 ways, for example, as 47726956225 + 62393045796 = 218465^2 + 249786^2 .

It is a cyclic number.

It is not a de Polignac number, because 110120002021 - 2¹ = 110120002019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110120001989 and 110120002007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110120002721) 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, 1898620696 + ... + 1898620753.

It is an arithmetic number, because the mean of its divisors is an integer number (28479310875).

Almost surely, 2^110120002021 is an apocalyptic number.

It is an amenable number.

110120002021 is a deficient number, since it is larger than the sum of its proper divisors (3797241479).

110120002021 is an equidigital number, since it uses as much as digits as its factorization.

110120002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3797241478.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 110120002021 its reverse (120200021011), we get a palindrome (230320023032).

The spelling of 110120002021 in words is "one hundred ten billion, one hundred twenty million, two thousand, twenty-one".