102888007221 has 4 divisors (see below), whose sum is σ = 137184009632. Its totient is φ = 68592004812.

The previous prime is 102888007213. The next prime is 102888007247. The reversal of 102888007221 is 122700888201.

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, and also an emirpimes, since its reverse is a distinct semiprime: 122700888201 = 3 ⋅40900296067.

It is not a de Polignac number, because 102888007221 - 2³ = 102888007213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102888007221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102888007921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17148001201 + ... + 17148001206.

It is an arithmetic number, because the mean of its divisors is an integer number (34296002408).

Almost surely, 2^102888007221 is an apocalyptic number.

It is an amenable number.

102888007221 is a deficient number, since it is larger than the sum of its proper divisors (34296002411).

102888007221 is an equidigital number, since it uses as much as digits as its factorization.

102888007221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34296002410.

The product of its (nonzero) digits is 28672, while the sum is 39.

The spelling of 102888007221 in words is "one hundred two billion, eight hundred eighty-eight million, seven thousand, two hundred twenty-one".