210200112021 has 4 divisors (see below), whose sum is σ = 280266816032. Its totient is φ = 140133408012.

The previous prime is 210200112011. The next prime is 210200112049. The reversal of 210200112021 is 120211002012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 210200112021 - 2¹³ = 210200103829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 210200111988 and 210200112006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210200112011) 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, 35033352001 + ... + 35033352006.

It is an arithmetic number, because the mean of its divisors is an integer number (70066704008).

Almost surely, 2^210200112021 is an apocalyptic number.

It is an amenable number.

210200112021 is a deficient number, since it is larger than the sum of its proper divisors (70066704011).

210200112021 is an equidigital number, since it uses as much as digits as its factorization.

210200112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70066704010.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 210200112021 its reverse (120211002012), we get a palindrome (330411114033).

The spelling of 210200112021 in words is "two hundred ten billion, two hundred million, one hundred twelve thousand, twenty-one".