102001130321 has 4 divisors (see below), whose sum is σ = 102329108544. Its totient is φ = 101673152100.

The previous prime is 102001130293. The next prime is 102001130401. The reversal of 102001130321 is 123031100201.

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 a de Polignac number, because none of the positive numbers 2^k-102001130321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102001130296 and 102001130305.

It is not an unprimeable number, because it can be changed into a prime (102001130521) 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, 163988645 + ... + 163989266.

It is an arithmetic number, because the mean of its divisors is an integer number (25582277136).

Almost surely, 2^102001130321 is an apocalyptic number.

It is an amenable number.

102001130321 is a deficient number, since it is larger than the sum of its proper divisors (327978223).

102001130321 is an equidigital number, since it uses as much as digits as its factorization.

102001130321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327978222.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 102001130321 its reverse (123031100201), we get a palindrome (225032230522).

The spelling of 102001130321 in words is "one hundred two billion, one million, one hundred thirty thousand, three hundred twenty-one".