21033311133120 has 896 divisors, whose sum is σ = 82515484090368. Its totient is φ = 4468934246400.

The previous prime is 21033311133077. The next prime is 21033311133193. The reversal of 21033311133120 is 2133111333012.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 225504414 + ... + 225597666.

It is an arithmetic number, because the mean of its divisors is an integer number (92093174208).

Almost surely, 2^{21033311133120} is an apocalyptic number.

21033311133120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21033311133120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41257742045184).

21033311133120 is an abundant number, since it is smaller than the sum of its proper divisors (61482172957248).

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

21033311133120 is a wasteful number, since it uses less digits than its factorization.

21033311133120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93381 (or 93371 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 21033311133120 its reverse (2133111333012), we get a palindrome (23166422466132).

The spelling of 21033311133120 in words is "twenty-one trillion, thirty-three billion, three hundred eleven million, one hundred thirty-three thousand, one hundred twenty".