210010001100221 has 16 divisors (see below), whose sum is σ = 242137435127808. Its totient is φ = 178417407682800.

The previous prime is 210010001100157. The next prime is 210010001100233. The reversal of 210010001100221 is 122001100010012.

It is a cyclic number.

It is not a de Polignac number, because 210010001100221 - 2⁶ = 210010001100157 is a prime.

It is a super-2 number, since 2×210010001100221² (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 (210010001100821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138381725 + ... + 139891106.

It is an arithmetic number, because the mean of its divisors is an integer number (15133589695488).

Almost surely, 2^{210010001100221} is an apocalyptic number.

It is an amenable number.

210010001100221 is a deficient number, since it is larger than the sum of its proper divisors (32127434027587).

210010001100221 is a wasteful number, since it uses less digits than its factorization.

210010001100221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278273792.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 210010001100221 its reverse (122001100010012), we get a palindrome (332011101110233).

The spelling of 210010001100221 in words is "two hundred ten trillion, ten billion, one million, one hundred thousand, two hundred twenty-one".