21421424130201 has 12 divisors (see below), whose sum is σ = 30942097636528. Its totient is φ = 14280930700344.

The previous prime is 21421424130173. The next prime is 21421424130203. The reversal of 21421424130201 is 10203142412412.

21421424130201 is a `hidden beast` number, since 2 + 1 + 4 + 2 + 1 + 42 + 413 + 0 + 201 = 666.

It is not a de Polignac number, because 21421424130201 - 2⁹ = 21421424129689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21421424130203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11064786 + ... + 12855828.

Almost surely, 2^{21421424130201} is an apocalyptic number.

It is an amenable number.

21421424130201 is a deficient number, since it is larger than the sum of its proper divisors (9520673506327).

21421424130201 is a wasteful number, since it uses less digits than its factorization.

21421424130201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3119972 (or 3119969 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 21421424130201 its reverse (10203142412412), we get a palindrome (31624566542613).

The spelling of 21421424130201 in words is "twenty-one trillion, four hundred twenty-one billion, four hundred twenty-four million, one hundred thirty thousand, two hundred one".