133331111421 has 16 divisors (see below), whose sum is σ = 178442669568. Its totient is φ = 88553606400.

The previous prime is 133331111393. The next prime is 133331111449. The reversal of 133331111421 is 124111133331.

It is an interprime number because it is at equal distance from previous prime (133331111393) and next prime (133331111449).

It is not a de Polignac number, because 133331111421 - 2¹⁹ = 133330587133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133331111391 and 133331111400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133331111491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5354961 + ... + 5379801.

It is an arithmetic number, because the mean of its divisors is an integer number (11152666848).

Almost surely, 2^133331111421 is an apocalyptic number.

It is an amenable number.

133331111421 is a deficient number, since it is larger than the sum of its proper divisors (45111558147).

133331111421 is a wasteful number, since it uses less digits than its factorization.

133331111421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31492.

The product of its digits is 648, while the sum is 24.

Adding to 133331111421 its reverse (124111133331), we get a palindrome (257442244752).

The spelling of 133331111421 in words is "one hundred thirty-three billion, three hundred thirty-one million, one hundred eleven thousand, four hundred twenty-one".