102100112221 has 4 divisors (see below), whose sum is σ = 102188818944. Its totient is φ = 102011405500.

The previous prime is 102100112209. The next prime is 102100112249. The reversal of 102100112221 is 122211001201.

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 102100112221 - 2⁵ = 102100112189 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 (102100152221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44351635 + ... + 44353936.

It is an arithmetic number, because the mean of its divisors is an integer number (25547204736).

Almost surely, 2^102100112221 is an apocalyptic number.

It is an amenable number.

102100112221 is a deficient number, since it is larger than the sum of its proper divisors (88706723).

102100112221 is an equidigital number, since it uses as much as digits as its factorization.

102100112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88706722.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102100112221 its reverse (122211001201), we get a palindrome (224311113422).

The spelling of 102100112221 in words is "one hundred two billion, one hundred million, one hundred twelve thousand, two hundred twenty-one".