13133321421 has 32 divisors (see below), whose sum is σ = 19672591488. Its totient is φ = 7723434240.

The previous prime is 13133321419. The next prime is 13133321429. The reversal of 13133321421 is 12412333131.

It is not a de Polignac number, because 13133321421 - 2¹ = 13133321419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13133321391 and 13133321400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13133321429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 441015 + ... + 469851.

It is an arithmetic number, because the mean of its divisors is an integer number (614768484).

Almost surely, 2^13133321421 is an apocalyptic number.

13133321421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13133321421 is a deficient number, since it is larger than the sum of its proper divisors (6539270067).

13133321421 is a wasteful number, since it uses less digits than its factorization.

13133321421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29261.

The product of its digits is 1296, while the sum is 24.

Adding to 13133321421 its reverse (12412333131), we get a palindrome (25545654552).

The spelling of 13133321421 in words is "thirteen billion, one hundred thirty-three million, three hundred twenty-one thousand, four hundred twenty-one".