133121330 has 8 divisors (see below), whose sum is σ = 239618412. Its totient is φ = 53248528.

The previous prime is 133121321. The next prime is 133121341. The reversal of 133121330 is 33121331.

It can be written as a sum of positive squares in 2 ways, for example, as 119006281 + 14115049 = 10909^2 + 3757^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 133121299 and 133121308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6656057 + ... + 6656076.

Almost surely, 2^133121330 is an apocalyptic number.

133121330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

133121330 is a deficient number, since it is larger than the sum of its proper divisors (106497082).

133121330 is a wasteful number, since it uses less digits than its factorization.

133121330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13312140.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 133121330 is about 11537.8217181581. The cubic root of 133121330 is about 510.6020443700.

Adding to 133121330 its reverse (33121331), we get a palindrome (166242661).

Subtracting from 133121330 its reverse (33121331), we obtain a palindrome (99999999).

The spelling of 133121330 in words is "one hundred thirty-three million, one hundred twenty-one thousand, three hundred thirty".