133213012400 has 60 divisors (see below), whose sum is σ = 344663065152. Its totient is φ = 49186341120.

The previous prime is 133213012327. The next prime is 133213012423. The reversal of 133213012400 is 4210312331.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12803744 + ... + 12814143.

Almost surely, 2^133213012400 is an apocalyptic number.

133213012400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133213012400 is an abundant number, since it is smaller than the sum of its proper divisors (211450052752).

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

133213012400 is a wasteful number, since it uses less digits than its factorization.

133213012400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25617918 (or 25617907 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 133213012400 its reverse (4210312331), we get a palindrome (137423324731).

The spelling of 133213012400 in words is "one hundred thirty-three billion, two hundred thirteen million, twelve thousand, four hundred".