133421112 has 192 divisors, whose sum is σ = 421480800. Its totient is φ = 37739520.

The previous prime is 133421111. The next prime is 133421147. The reversal of 133421112 is 211124331.

133421112 is a `hidden beast` number, since 133 + 421 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133421111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 849738 + ... + 849894.

Almost surely, 2^133421112 is an apocalyptic number.

133421112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133421112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210740400).

133421112 is an abundant number, since it is smaller than the sum of its proper divisors (288059688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133421112 is a wasteful number, since it uses less digits than its factorization.

133421112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 239 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 133421112 is about 11550.8056861848. The cubic root of 133421112 is about 510.9850397031.

Adding to 133421112 its reverse (211124331), we get a palindrome (344545443).

The spelling of 133421112 in words is "one hundred thirty-three million, four hundred twenty-one thousand, one hundred twelve".