10421112420 has 72 divisors (see below), whose sum is σ = 31620878016. Its totient is φ = 2778069312.

The previous prime is 10421112409. The next prime is 10421112473. The reversal of 10421112420 is 2421112401.

10421112420 is a `hidden beast` number, since 1 + 0 + 421 + 1 + 1 + 242 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 10421112393 and 10421112402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 702399 + ... + 717081.

Almost surely, 2^10421112420 is an apocalyptic number.

10421112420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10421112420 is an abundant number, since it is smaller than the sum of its proper divisors (21199765596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10421112420 is a wasteful number, since it uses less digits than its factorization.

10421112420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18641 (or 18636 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 10421112420 its reverse (2421112401), we get a palindrome (12842224821).

The spelling of 10421112420 in words is "ten billion, four hundred twenty-one million, one hundred twelve thousand, four hundred twenty".