102203031230021 has 8 divisors (see below), whose sum is σ = 103878830980344. Its totient is φ = 100527242454720.

The previous prime is 102203031230009. The next prime is 102203031230059. The reversal of 102203031230021 is 120032130302201.

It can be written as a sum of positive squares in 4 ways, for example, as 13613258848225 + 88589772381796 = 3689615^2 + 9412214^2 .

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 102203031230021 - 2²⁶ = 102202964121157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102203031229975 and 102203031230002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102203031230821) 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, 17214071 + ... + 22377003.

It is an arithmetic number, because the mean of its divisors is an integer number (12984853872543).

Almost surely, 2^{102203031230021} is an apocalyptic number.

It is an amenable number.

102203031230021 is a deficient number, since it is larger than the sum of its proper divisors (1675799750323).

102203031230021 is an equidigital number, since it uses as much as digits as its factorization.

102203031230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5487511.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 102203031230021 its reverse (120032130302201), we get a palindrome (222235161532222).

The spelling of 102203031230021 in words is "one hundred two trillion, two hundred three billion, thirty-one million, two hundred thirty thousand, twenty-one".