102133120321 has 4 divisors (see below), whose sum is σ = 102556909444. Its totient is φ = 101709331200.

The previous prime is 102133120303. The next prime is 102133120333. The reversal of 102133120321 is 123021331201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123021331201 = 29 ⋅4242114869.

It can be written as a sum of positive squares in 2 ways, for example, as 94809183921 + 7323936400 = 307911^2 + 85580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102133120321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102133120351) 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, 211894200 + ... + 211894681.

It is an arithmetic number, because the mean of its divisors is an integer number (25639227361).

Almost surely, 2^102133120321 is an apocalyptic number.

It is an amenable number.

102133120321 is a deficient number, since it is larger than the sum of its proper divisors (423789123).

102133120321 is an equidigital number, since it uses as much as digits as its factorization.

102133120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423789122.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 102133120321 its reverse (123021331201), we get a palindrome (225154451522).

The spelling of 102133120321 in words is "one hundred two billion, one hundred thirty-three million, one hundred twenty thousand, three hundred twenty-one".