21033322023232 has 56 divisors (see below), whose sum is σ = 42664693188096. Its totient is φ = 10283568910848.

The previous prime is 21033322023199. The next prime is 21033322023281. The reversal of 21033322023232 is 23232022333012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21033322023232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148078 + ... + 6487570.

It is an arithmetic number, because the mean of its divisors is an integer number (761869521216).

Almost surely, 2^{21033322023232} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21033322023232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21332346594048).

21033322023232 is an abundant number, since it is smaller than the sum of its proper divisors (21631371164864).

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

21033322023232 is a wasteful number, since it uses less digits than its factorization.

21033322023232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6340655 (or 6340645 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 28.

Adding to 21033322023232 its reverse (23232022333012), we get a palindrome (44265344356244).

The spelling of 21033322023232 in words is "twenty-one trillion, thirty-three billion, three hundred twenty-two million, twenty-three thousand, two hundred thirty-two".