21321133200030 has 32 divisors (see below), whose sum is σ = 51189067216800. Its totient is φ = 5683596904832.

The previous prime is 21321133200023. The next prime is 21321133200049. The reversal of 21321133200030 is 3000233112312.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127328385 + ... + 127495724.

It is an arithmetic number, because the mean of its divisors is an integer number (1599658350525).

Almost surely, 2^{21321133200030} is an apocalyptic number.

21321133200030 is an abundant number, since it is smaller than the sum of its proper divisors (29867934016770).

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

21321133200030 is a wasteful number, since it uses less digits than its factorization.

21321133200030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254826908.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 21321133200030 its reverse (3000233112312), we get a palindrome (24321366312342).

The spelling of 21321133200030 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred thirty-three million, two hundred thousand, thirty".