110000210021 has 16 divisors (see below), whose sum is σ = 124156900224. Its totient is φ = 96696012864.

The previous prime is 110000210009. The next prime is 110000210029. The reversal of 110000210021 is 120012000011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110000210021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110000209990 and 110000210008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110000210029) 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, 742466 + ... + 878211.

It is an arithmetic number, because the mean of its divisors is an integer number (7759806264).

Almost surely, 2^110000210021 is an apocalyptic number.

It is an amenable number.

110000210021 is a deficient number, since it is larger than the sum of its proper divisors (14156690203).

110000210021 is a wasteful number, since it uses less digits than its factorization.

110000210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620940.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 110000210021 its reverse (120012000011), we get a palindrome (230012210032).

The spelling of 110000210021 in words is "one hundred ten billion, two hundred ten thousand, twenty-one".