21033332112210 has 576 divisors, whose sum is σ = 62202141388800. Its totient is φ = 4534916474880.

The previous prime is 21033332112203. The next prime is 21033332112241. The reversal of 21033332112210 is 1221123333012.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 9547584969 + ... + 9547587171.

It is an arithmetic number, because the mean of its divisors is an integer number (107989828800).

Almost surely, 2^{21033332112210} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21033332112210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31101070694400).

21033332112210 is an abundant number, since it is smaller than the sum of its proper divisors (41168809276590).

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

21033332112210 is a wasteful number, since it uses less digits than its factorization.

21033332112210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767 (or 2739 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21033332112210 its reverse (1221123333012), we get a palindrome (22254455445222).

The spelling of 21033332112210 in words is "twenty-one trillion, thirty-three billion, three hundred thirty-two million, one hundred twelve thousand, two hundred ten".