10421201340023 has 4 divisors (see below), whose sum is σ = 10421734331568. Its totient is φ = 10420668348480.

The previous prime is 10421201340019. The next prime is 10421201340031. The reversal of 10421201340023 is 32004310212401.

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 10421201340023 - 2² = 10421201340019 is a prime.

It is a super-3 number, since 3×10421201340023³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10421201340923) 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, 266466443 + ... + 266505548.

It is an arithmetic number, because the mean of its divisors is an integer number (2605433582892).

Almost surely, 2^{10421201340023} is an apocalyptic number.

10421201340023 is a deficient number, since it is larger than the sum of its proper divisors (532991545).

10421201340023 is an equidigital number, since it uses as much as digits as its factorization.

10421201340023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532991544.

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

Adding to 10421201340023 its reverse (32004310212401), we get a palindrome (42425511552424).

The spelling of 10421201340023 in words is "ten trillion, four hundred twenty-one billion, two hundred one million, three hundred forty thousand, twenty-three".