102110212202221 has 4 divisors (see below), whose sum is σ = 102114452155392. Its totient is φ = 102105972249052.

The previous prime is 102110212202213. The next prime is 102110212202227. The reversal of 102110212202221 is 122202212011201.

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 102110212202221 - 2³ = 102110212202213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102110212202227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2119940461 + ... + 2119988626.

It is an arithmetic number, because the mean of its divisors is an integer number (25528613038848).

Almost surely, 2^{102110212202221} is an apocalyptic number.

It is an amenable number.

102110212202221 is a deficient number, since it is larger than the sum of its proper divisors (4239953171).

102110212202221 is an equidigital number, since it uses as much as digits as its factorization.

102110212202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4239953170.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102110212202221 its reverse (122202212011201), we get a palindrome (224312424213422).

The spelling of 102110212202221 in words is "one hundred two trillion, one hundred ten billion, two hundred twelve million, two hundred two thousand, two hundred twenty-one".