21330425312013 has 16 divisors (see below), whose sum is σ = 29150347714560. Its totient is φ = 13869188844336.

The previous prime is 21330425312003. The next prime is 21330425312017. The reversal of 21330425312013 is 31021352403312.

It is not a de Polignac number, because 21330425312013 - 2¹⁴ = 21330425295629 is a prime.

It is a super-2 number, since 2×21330425312013² (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 (21330425312017) 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, 474429795 + ... + 474474752.

It is an arithmetic number, because the mean of its divisors is an integer number (1821896732160).

Almost surely, 2^{21330425312013} is an apocalyptic number.

It is an amenable number.

21330425312013 is a deficient number, since it is larger than the sum of its proper divisors (7819922402547).

21330425312013 is a wasteful number, since it uses less digits than its factorization.

21330425312013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948904736.

The product of its (nonzero) digits is 12960, while the sum is 30.

Adding to 21330425312013 its reverse (31021352403312), we get a palindrome (52351777715325).

The spelling of 21330425312013 in words is "twenty-one trillion, three hundred thirty billion, four hundred twenty-five million, three hundred twelve thousand, thirteen".