133351220 has 24 divisors (see below), whose sum is σ = 285997824. Its totient is φ = 52205216.

The previous prime is 133351201. The next prime is 133351249. The reversal of 133351220 is 22153331.

133351220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 133351192 and 133351201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69992 + ... + 71871.

It is an arithmetic number, because the mean of its divisors is an integer number (11916576).

Almost surely, 2^133351220 is an apocalyptic number.

133351220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133351220 is an abundant number, since it is smaller than the sum of its proper divisors (152646604).

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

133351220 is a wasteful number, since it uses less digits than its factorization.

133351220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141919 (or 141917 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 133351220 is about 11547.7798732051. The cubic root of 133351220 is about 510.8957984432.

The spelling of 133351220 in words is "one hundred thirty-three million, three hundred fifty-one thousand, two hundred twenty".