10201323202421 has 4 divisors (see below), whose sum is σ = 10986040371852. Its totient is φ = 9416606032992.

The previous prime is 10201323202373. The next prime is 10201323202501. The reversal of 10201323202421 is 12420232310201.

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 6871811359396 + 3329511843025 = 2621414^2 + 1824695^2 .

It is a cyclic number.

It is not a de Polignac number, because 10201323202421 - 2²⁶ = 10201256093557 is a prime.

It is a super-2 number, since 2×10201323202421² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201323292421) 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, 392358584696 + ... + 392358584721.

It is an arithmetic number, because the mean of its divisors is an integer number (2746510092963).

Almost surely, 2^{10201323202421} is an apocalyptic number.

It is an amenable number.

10201323202421 is a deficient number, since it is larger than the sum of its proper divisors (784717169431).

10201323202421 is an equidigital number, since it uses as much as digits as its factorization.

10201323202421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784717169430.

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

Adding to 10201323202421 its reverse (12420232310201), we get a palindrome (22621555512622).

The spelling of 10201323202421 in words is "ten trillion, two hundred one billion, three hundred twenty-three million, two hundred two thousand, four hundred twenty-one".