10020424421 has 16 divisors (see below), whose sum is σ = 12578764800. Its totient is φ = 7783105968.

The previous prime is 10020424417. The next prime is 10020424451. The reversal of 10020424421 is 12442402001.

It is a cyclic number.

It is not a de Polignac number, because 10020424421 - 2² = 10020424417 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10020424393 and 10020424402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020424411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1634801 + ... + 1640918.

It is an arithmetic number, because the mean of its divisors is an integer number (786172800).

Almost surely, 2^10020424421 is an apocalyptic number.

It is an amenable number.

10020424421 is a deficient number, since it is larger than the sum of its proper divisors (2558340379).

10020424421 is a wasteful number, since it uses less digits than its factorization.

10020424421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3275768.

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

Adding to 10020424421 its reverse (12442402001), we get a palindrome (22462826422).

The spelling of 10020424421 in words is "ten billion, twenty million, four hundred twenty-four thousand, four hundred twenty-one".