133341220 has 12 divisors (see below), whose sum is σ = 280016604. Its totient is φ = 53336480.

The previous prime is 133341211. The next prime is 133341233. The reversal of 133341220 is 22143331.

It can be written as a sum of positive squares in 2 ways, for example, as 44943616 + 88397604 = 6704^2 + 9402^2 .

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, 3333511 + ... + 3333550.

It is an arithmetic number, because the mean of its divisors is an integer number (23334717).

Almost surely, 2^133341220 is an apocalyptic number.

133341220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133341220 is an abundant number, since it is smaller than the sum of its proper divisors (146675384).

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

133341220 is a wasteful number, since it uses less digits than its factorization.

133341220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6667070 (or 6667068 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 133341220 is about 11547.3468814269. The cubic root of 133341220 is about 510.8830274422.

Adding to 133341220 its reverse (22143331), we get a palindrome (155484551).

It can be divided in two parts, 13 and 3341220, that multiplied together give a triangular number (43435860 = T₉₃₂₀).

The spelling of 133341220 in words is "one hundred thirty-three million, three hundred forty-one thousand, two hundred twenty".