21333033244020 has 48 divisors (see below), whose sum is σ = 59777779501440. Its totient is φ = 5684495872896.

The previous prime is 21333033244001. The next prime is 21333033244037. The reversal of 21333033244020 is 2044233033312.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 134701207 + ... + 134859486.

It is an arithmetic number, because the mean of its divisors is an integer number (1245370406280).

Almost surely, 2^{21333033244020} is an apocalyptic number.

21333033244020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21333033244020 is an abundant number, since it is smaller than the sum of its proper divisors (38444746257420).

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

21333033244020 is a wasteful number, since it uses less digits than its factorization.

21333033244020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269562024 (or 269562022 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 30.

Adding to 21333033244020 its reverse (2044233033312), we get a palindrome (23377266277332).

The spelling of 21333033244020 in words is "twenty-one trillion, three hundred thirty-three billion, thirty-three million, two hundred forty-four thousand, twenty".