21330103221331 has 16 divisors (see below), whose sum is σ = 22582607975200. Its totient is φ = 20090642803200.

The previous prime is 21330103221269. The next prime is 21330103221367. The reversal of 21330103221331 is 13312230103312.

It is not a de Polignac number, because 21330103221331 - 2²⁹ = 21329566350419 is a prime.

It is a super-2 number, since 2×21330103221331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21330103221296 and 21330103221305.

It is not an unprimeable number, because it can be changed into a prime (21330103222331) 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, 12576841 + ... + 14171701.

It is an arithmetic number, because the mean of its divisors is an integer number (1411412998450).

Almost surely, 2^{21330103221331} is an apocalyptic number.

21330103221331 is a deficient number, since it is larger than the sum of its proper divisors (1252504753869).

21330103221331 is a wasteful number, since it uses less digits than its factorization.

21330103221331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1598950.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21330103221331 its reverse (13312230103312), we get a palindrome (34642333324643).

The spelling of 21330103221331 in words is "twenty-one trillion, three hundred thirty billion, one hundred three million, two hundred twenty-one thousand, three hundred thirty-one".