21210100424013 has 8 divisors (see below), whose sum is σ = 28280432124000. Its totient is φ = 14139917836688.

The previous prime is 21210100424011. The next prime is 21210100424027. The reversal of 21210100424013 is 31042400101212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21210100424013 - 2¹ = 21210100424011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21210100424011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36945843 + ... + 37515536.

It is an arithmetic number, because the mean of its divisors is an integer number (3535054015500).

Almost surely, 2^{21210100424013} is an apocalyptic number.

It is an amenable number.

21210100424013 is a deficient number, since it is larger than the sum of its proper divisors (7070331699987).

21210100424013 is an equidigital number, since it uses as much as digits as its factorization.

21210100424013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74556331.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21210100424013 its reverse (31042400101212), we get a palindrome (52252500525225).

The spelling of 21210100424013 in words is "twenty-one trillion, two hundred ten billion, one hundred million, four hundred twenty-four thousand, thirteen".