102021130023 has 4 divisors (see below), whose sum is σ = 136028173368. Its totient is φ = 68014086680.

The previous prime is 102021130007. The next prime is 102021130049. The reversal of 102021130023 is 320031120201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102021130023 - 2⁴ = 102021130007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102021129984 and 102021130011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021130723) 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, 17003521668 + ... + 17003521673.

It is an arithmetic number, because the mean of its divisors is an integer number (34007043342).

Almost surely, 2^102021130023 is an apocalyptic number.

102021130023 is a deficient number, since it is larger than the sum of its proper divisors (34007043345).

102021130023 is an equidigital number, since it uses as much as digits as its factorization.

102021130023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34007043344.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 102021130023 its reverse (320031120201), we get a palindrome (422052250224).

The spelling of 102021130023 in words is "one hundred two billion, twenty-one million, one hundred thirty thousand, twenty-three".