21420040003013 has 8 divisors (see below), whose sum is σ = 21879312478848. Its totient is φ = 20960914483264.

The previous prime is 21420040003007. The next prime is 21420040003069. The reversal of 21420040003013 is 31030004002412.

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 21420040003013 - 2¹⁴ = 21420039986629 is a prime.

It is a super-2 number, since 2×21420040003013² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21420040003003) 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, 36444356 + ... + 37027437.

It is an arithmetic number, because the mean of its divisors is an integer number (2734914059856).

Almost surely, 2^{21420040003013} is an apocalyptic number.

It is an amenable number.

21420040003013 is a deficient number, since it is larger than the sum of its proper divisors (459272475835).

21420040003013 is an equidigital number, since it uses as much as digits as its factorization.

21420040003013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73478043.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21420040003013 its reverse (31030004002412), we get a palindrome (52450044005425).

The spelling of 21420040003013 in words is "twenty-one trillion, four hundred twenty billion, forty million, three thousand, thirteen".