102179128321 has 8 divisors (see below), whose sum is σ = 107776044000. Its totient is φ = 96604119360.

The previous prime is 102179128291. The next prime is 102179128333. The reversal of 102179128321 is 123821971201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102179128321 - 2¹⁵ = 102179095553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102179128361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5467096 + ... + 5485753.

It is an arithmetic number, because the mean of its divisors is an integer number (13472005500).

Almost surely, 2^102179128321 is an apocalyptic number.

It is an amenable number.

102179128321 is a deficient number, since it is larger than the sum of its proper divisors (5596915679).

102179128321 is a wasteful number, since it uses less digits than its factorization.

102179128321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10953359.

The product of its (nonzero) digits is 12096, while the sum is 37.

The spelling of 102179128321 in words is "one hundred two billion, one hundred seventy-nine million, one hundred twenty-eight thousand, three hundred twenty-one".