102243130004021 has 4 divisors (see below), whose sum is σ = 102244955928012. Its totient is φ = 102241304080032.

The previous prime is 102243130004011. The next prime is 102243130004023. The reversal of 102243130004021 is 120400031342201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16334126402500 + 85909003601521 = 4041550^2 + 9268711^2 .

It is a cyclic number.

It is not a de Polignac number, because 102243130004021 - 2⁶ = 102243130003957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102243130004023) 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, 912878000 + ... + 912989993.

It is an arithmetic number, because the mean of its divisors is an integer number (25561238982003).

Almost surely, 2^{102243130004021} is an apocalyptic number.

It is an amenable number.

102243130004021 is a deficient number, since it is larger than the sum of its proper divisors (1825923991).

102243130004021 is an equidigital number, since it uses as much as digits as its factorization.

102243130004021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825923990.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 102243130004021 its reverse (120400031342201), we get a palindrome (222643161346222).

The spelling of 102243130004021 in words is "one hundred two trillion, two hundred forty-three billion, one hundred thirty million, four thousand, twenty-one".