21421120001313 has 16 divisors (see below), whose sum is σ = 28750907433600. Its totient is φ = 14186041363200.

The previous prime is 21421120001297. The next prime is 21421120001353. The reversal of 21421120001313 is 31310002112412.

It is not a de Polignac number, because 21421120001313 - 2⁴ = 21421120001297 is a prime.

It is a super-2 number, since 2×21421120001313² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21421120001313.

It is not an unprimeable number, because it can be changed into a prime (21421120001353) 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, 91438393 + ... + 91672361.

It is an arithmetic number, because the mean of its divisors is an integer number (1796931714600).

Almost surely, 2^{21421120001313} is an apocalyptic number.

It is an amenable number.

21421120001313 is a deficient number, since it is larger than the sum of its proper divisors (7329787432287).

21421120001313 is a wasteful number, since it uses less digits than its factorization.

21421120001313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436232.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21421120001313 its reverse (31310002112412), we get a palindrome (52731122113725).

The spelling of 21421120001313 in words is "twenty-one trillion, four hundred twenty-one billion, one hundred twenty million, one thousand, three hundred thirteen".