13033330221421 has 8 divisors (see below), whose sum is σ = 14275858660920. Its totient is φ = 11843675332608.

The previous prime is 13033330221409. The next prime is 13033330221449. The reversal of 13033330221421 is 12412203333031.

13033330221421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1893956716521 + 11139373504900 = 1376211^2 + 3337570^2 .

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 13033330221421 - 2¹³ = 13033330213229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13033330221421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13033330221521) 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, 13218387156 + ... + 13218388141.

It is an arithmetic number, because the mean of its divisors is an integer number (1784482332615).

Almost surely, 2^{13033330221421} is an apocalyptic number.

It is an amenable number.

13033330221421 is a deficient number, since it is larger than the sum of its proper divisors (1242528439499).

13033330221421 is a wasteful number, since it uses less digits than its factorization.

13033330221421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26436775343.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 13033330221421 its reverse (12412203333031), we get a palindrome (25445533554452).

The spelling of 13033330221421 in words is "thirteen trillion, thirty-three billion, three hundred thirty million, two hundred twenty-one thousand, four hundred twenty-one".