210221310113 has 4 divisors (see below), whose sum is σ = 210296634048. Its totient is φ = 210145986180.

The previous prime is 210221310109. The next prime is 210221310137. The reversal of 210221310113 is 311013122012.

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 a cyclic number.

It is not a de Polignac number, because 210221310113 - 2² = 210221310109 is a prime.

It is a super-2 number, since 2×210221310113² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210221310091 and 210221310100.

It is not an unprimeable number, because it can be changed into a prime (210221310163) 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, 37657781 + ... + 37663362.

It is an arithmetic number, because the mean of its divisors is an integer number (52574158512).

Almost surely, 2^210221310113 is an apocalyptic number.

It is an amenable number.

210221310113 is a deficient number, since it is larger than the sum of its proper divisors (75323935).

210221310113 is an equidigital number, since it uses as much as digits as its factorization.

210221310113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75323934.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 210221310113 its reverse (311013122012), we get a palindrome (521234432125).

The spelling of 210221310113 in words is "two hundred ten billion, two hundred twenty-one million, three hundred ten thousand, one hundred thirteen".