10021453501 has 4 divisors (see below), whose sum is σ = 10021906332. Its totient is φ = 10021000672.

The previous prime is 10021453493. The next prime is 10021453553. The reversal of 10021453501 is 10535412001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10535412001 = 29 ⋅363290069.

It can be written as a sum of positive squares in 2 ways, for example, as 3178027876 + 6843425625 = 56374^2 + 82725^2 .

It is a cyclic number.

It is not a de Polignac number, because 10021453501 - 2³ = 10021453493 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 (10021450501) 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, 191416 + ... + 238081.

It is an arithmetic number, because the mean of its divisors is an integer number (2505476583).

Almost surely, 2^10021453501 is an apocalyptic number.

It is an amenable number.

10021453501 is a deficient number, since it is larger than the sum of its proper divisors (452831).

10021453501 is an equidigital number, since it uses as much as digits as its factorization.

10021453501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452830.

The product of its (nonzero) digits is 600, while the sum is 22.

Adding to 10021453501 its reverse (10535412001), we get a palindrome (20556865502).

The spelling of 10021453501 in words is "ten billion, twenty-one million, four hundred fifty-three thousand, five hundred one".