133221510512 has 20 divisors (see below), whose sum is σ = 271701765480. Its totient is φ = 63104925888.

The previous prime is 133221510503. The next prime is 133221510517. The reversal of 133221510512 is 215015122331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133221510517) 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, 219114023 + ... + 219114630.

It is an arithmetic number, because the mean of its divisors is an integer number (13585088274).

Almost surely, 2^133221510512 is an apocalyptic number.

It is an amenable number.

133221510512 is an abundant number, since it is smaller than the sum of its proper divisors (138480254968).

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

133221510512 is a wasteful number, since it uses less digits than its factorization.

133221510512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438228680 (or 438228674 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 133221510512 its reverse (215015122331), we get a palindrome (348236632843).

The spelling of 133221510512 in words is "one hundred thirty-three billion, two hundred twenty-one million, five hundred ten thousand, five hundred twelve".