21133330221300 has 72 divisors (see below), whose sum is σ = 66704475036192. Its totient is φ = 5123231568000.

The previous prime is 21133330221287. The next prime is 21133330221337. The reversal of 21133330221300 is 312203333112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3202016431 + ... + 3202023030.

Almost surely, 2^{21133330221300} is an apocalyptic number.

21133330221300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21133330221300 is an abundant number, since it is smaller than the sum of its proper divisors (45571144814892).

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

21133330221300 is a wasteful number, since it uses less digits than its factorization.

21133330221300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6404039489 (or 6404039482 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21133330221300 its reverse (312203333112), we get a palindrome (21445533554412).

The spelling of 21133330221300 in words is "twenty-one trillion, one hundred thirty-three billion, three hundred thirty million, two hundred twenty-one thousand, three hundred".