10204024421 has 4 divisors (see below), whose sum is σ = 10236625452. Its totient is φ = 10171423392.

The previous prime is 10204024339. The next prime is 10204024447. The reversal of 10204024421 is 12442040201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12442040201 = 29 ⋅429035869.

It can be written as a sum of positive squares in 2 ways, for example, as 802588900 + 9401435521 = 28330^2 + 96961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10204024421 is a prime.

It is a super-2 number, since 2×10204024421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10204024393 and 10204024402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10204024921) 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, 16300046 + ... + 16300671.

It is an arithmetic number, because the mean of its divisors is an integer number (2559156363).

Almost surely, 2^10204024421 is an apocalyptic number.

It is an amenable number.

10204024421 is a deficient number, since it is larger than the sum of its proper divisors (32601031).

10204024421 is an equidigital number, since it uses as much as digits as its factorization.

10204024421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32601030.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 10204024421 its reverse (12442040201), we get a palindrome (22646064622).

The spelling of 10204024421 in words is "ten billion, two hundred four million, twenty-four thousand, four hundred twenty-one".