133331234421 has 64 divisors (see below), whose sum is σ = 225013303296. Its totient is φ = 68216851200.

The previous prime is 133331234419. The next prime is 133331234441. The reversal of 133331234421 is 124432133331.

It is not a de Polignac number, because 133331234421 - 2¹ = 133331234419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133331234411) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4260451 + ... + 4291631.

It is an arithmetic number, because the mean of its divisors is an integer number (3515832864).

Almost surely, 2^133331234421 is an apocalyptic number.

133331234421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

133331234421 is a deficient number, since it is larger than the sum of its proper divisors (91682068875).

133331234421 is a wasteful number, since it uses less digits than its factorization.

133331234421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31482.

The product of its digits is 15552, while the sum is 30.

Adding to 133331234421 its reverse (124432133331), we get a palindrome (257763367752).

The spelling of 133331234421 in words is "one hundred thirty-three billion, three hundred thirty-one million, two hundred thirty-four thousand, four hundred twenty-one".