10421040023501 has 4 divisors (see below), whose sum is σ = 10497106009212. Its totient is φ = 10344974037792.

The previous prime is 10421040023467. The next prime is 10421040023519. The reversal of 10421040023501 is 10532004012401.

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 1908072568900 + 8512967454601 = 1381330^2 + 2917699^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10421040023501 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 (10421040023551) 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, 38032992650 + ... + 38032992923.

It is an arithmetic number, because the mean of its divisors is an integer number (2624276502303).

Almost surely, 2^{10421040023501} is an apocalyptic number.

It is an amenable number.

10421040023501 is a deficient number, since it is larger than the sum of its proper divisors (76065985711).

10421040023501 is an equidigital number, since it uses as much as digits as its factorization.

10421040023501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76065985710.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 10421040023501 its reverse (10532004012401), we get a palindrome (20953044035902).

The spelling of 10421040023501 in words is "ten trillion, four hundred twenty-one billion, forty million, twenty-three thousand, five hundred one".