133521112 has 16 divisors (see below), whose sum is σ = 251753400. Its totient is φ = 66386880.

The previous prime is 133521103. The next prime is 133521119. The reversal of 133521112 is 211125331.

It is a self number, because there is not a number n which added to its sum of digits gives 133521112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133521119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45189 + ... + 48052.

Almost surely, 2^133521112 is an apocalyptic number.

It is an amenable number.

133521112 is a deficient number, since it is larger than the sum of its proper divisors (118232288).

133521112 is a wasteful number, since it uses less digits than its factorization.

133521112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93426 (or 93422 counting only the distinct ones).

The product of its digits is 180, while the sum is 19.

The square root of 133521112 is about 11555.1335777653. The cubic root of 133521112 is about 511.1126700366.

Adding to 133521112 its reverse (211125331), we get a palindrome (344646443).

The spelling of 133521112 in words is "one hundred thirty-three million, five hundred twenty-one thousand, one hundred twelve".