21003211121113 has 8 divisors (see below), whose sum is σ = 22627311088256. Its totient is φ = 19380320917200.

The previous prime is 21003211121099. The next prime is 21003211121131. The reversal of 21003211121113 is 31112111230012.

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 21003211121113 - 2⁹ = 21003211120601 is a prime.

It is a super-2 number, since 2×21003211121113² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21003211121143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302404743 + ... + 302474188.

It is an arithmetic number, because the mean of its divisors is an integer number (2828413886032).

Almost surely, 2^{21003211121113} is an apocalyptic number.

It is an amenable number.

21003211121113 is a deficient number, since it is larger than the sum of its proper divisors (1624099967143).

21003211121113 is a wasteful number, since it uses less digits than its factorization.

21003211121113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604881615.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 21003211121113 its reverse (31112111230012), we get a palindrome (52115322351125).

The spelling of 21003211121113 in words is "twenty-one trillion, three billion, two hundred eleven million, one hundred twenty-one thousand, one hundred thirteen".