10021434423 has 256 divisors, whose sum is σ = 20003880960. Its totient is φ = 4292352000.

The previous prime is 10021434419. The next prime is 10021434469. The reversal of 10021434423 is 32443412001.

It is not a de Polignac number, because 10021434423 - 2² = 10021434419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10021434393 and 10021434402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021433423) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 99222073 + ... + 99222173.

It is an arithmetic number, because the mean of its divisors is an integer number (78140160).

Almost surely, 2^10021434423 is an apocalyptic number.

10021434423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

10021434423 is a deficient number, since it is larger than the sum of its proper divisors (9982446537).

10021434423 is a wasteful number, since it uses less digits than its factorization.

10021434423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 10021434423 its reverse (32443412001), we get a palindrome (42464846424).

It can be divided in two parts, 10021 and 434423, that added together give a palindrome (444444).

The spelling of 10021434423 in words is "ten billion, twenty-one million, four hundred thirty-four thousand, four hundred twenty-three".