133421122412421 has 16 divisors (see below), whose sum is σ = 184108835433600. Its totient is φ = 85843068868928.

The previous prime is 133421122412353. The next prime is 133421122412423. The reversal of 133421122412421 is 124214221124331.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 133421122412421 - 2¹⁵ = 133421122379653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133421122412423) 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, 331885761 + ... + 332287526.

It is an arithmetic number, because the mean of its divisors is an integer number (11506802214600).

Almost surely, 2^{133421122412421} is an apocalyptic number.

It is an amenable number.

133421122412421 is a deficient number, since it is larger than the sum of its proper divisors (50687713021179).

133421122412421 is a wasteful number, since it uses less digits than its factorization.

133421122412421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664175628.

The product of its digits is 18432, while the sum is 33.

Adding to 133421122412421 its reverse (124214221124331), we get a palindrome (257635343536752).

The spelling of 133421122412421 in words is "one hundred thirty-three trillion, four hundred twenty-one billion, one hundred twenty-two million, four hundred twelve thousand, four hundred twenty-one".