210102020112221 has 32 divisors (see below), whose sum is σ = 218185627968000. Its totient is φ = 202076065271808.

The previous prime is 210102020112199. The next prime is 210102020112287. The reversal of 210102020112221 is 122211020201012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210102020112221 is a prime.

It is a super-2 number, since 2×210102020112221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 210102020112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210102020112421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24180225845 + ... + 24180234533.

It is an arithmetic number, because the mean of its divisors is an integer number (6818300874000).

Almost surely, 2^{210102020112221} is an apocalyptic number.

It is an amenable number.

210102020112221 is a deficient number, since it is larger than the sum of its proper divisors (8083607855779).

210102020112221 is a wasteful number, since it uses less digits than its factorization.

210102020112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11933.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210102020112221 its reverse (122211020201012), we get a palindrome (332313040313233).

The spelling of 210102020112221 in words is "two hundred ten trillion, one hundred two billion, twenty million, one hundred twelve thousand, two hundred twenty-one".