210000221007 has 4 divisors (see below), whose sum is σ = 280000294680. Its totient is φ = 140000147336.

The previous prime is 210000220973. The next prime is 210000221059. The reversal of 210000221007 is 700122000012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210000221007 - 2¹¹ = 210000218959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210000223007) 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, 35000036832 + ... + 35000036837.

It is an arithmetic number, because the mean of its divisors is an integer number (70000073670).

Almost surely, 2^210000221007 is an apocalyptic number.

210000221007 is a deficient number, since it is larger than the sum of its proper divisors (70000073673).

210000221007 is an equidigital number, since it uses as much as digits as its factorization.

210000221007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70000073672.

The product of its (nonzero) digits is 56, while the sum is 15.

Adding to 210000221007 its reverse (700122000012), we get a palindrome (910122221019).

The spelling of 210000221007 in words is "two hundred ten billion, two hundred twenty-one thousand, seven".