210000110021 has 8 divisors (see below), whose sum is σ = 226158127104. Its totient is φ = 193842687600.

The previous prime is 210000110017. The next prime is 210000110051. The reversal of 210000110021 is 120011000012.

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 210000110021 - 2² = 210000110017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 210000109990 and 210000110008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210000110051) 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, 817280 + ... + 1043046.

It is an arithmetic number, because the mean of its divisors is an integer number (28269765888).

Almost surely, 2^210000110021 is an apocalyptic number.

It is an amenable number.

210000110021 is a deficient number, since it is larger than the sum of its proper divisors (16158017083).

210000110021 is a wasteful number, since it uses less digits than its factorization.

210000110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297331.

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

Adding to 210000110021 its reverse (120011000012), we get a palindrome (330011110033).

The spelling of 210000110021 in words is "two hundred ten billion, one hundred ten thousand, twenty-one".