210113113122221 has 8 divisors (see below), whose sum is σ = 210177975268800. Its totient is φ = 210048252484480.

The previous prime is 210113113122193. The next prime is 210113113122223. The reversal of 210113113122221 is 122221311311012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210113113122221 is a prime.

It is a super-2 number, since 2×210113113122221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210113113122223) 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, 319947320 + ... + 320603358.

It is an arithmetic number, because the mean of its divisors is an integer number (26272246908600).

Almost surely, 2^{210113113122221} is an apocalyptic number.

It is an amenable number.

210113113122221 is a deficient number, since it is larger than the sum of its proper divisors (64862146579).

210113113122221 is an equidigital number, since it uses as much as digits as its factorization.

210113113122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754419.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 210113113122221 its reverse (122221311311012), we get a palindrome (332334424433233).

The spelling of 210113113122221 in words is "two hundred ten trillion, one hundred thirteen billion, one hundred thirteen million, one hundred twenty-two thousand, two hundred twenty-one".