2021123333240 has 128 divisors (see below), whose sum is σ = 4980724888320. Its totient is φ = 732027494400.

The previous prime is 2021123333197. The next prime is 2021123333323. The reversal of 2021123333240 is 423333211202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148245464 + ... + 148259096.

It is an arithmetic number, because the mean of its divisors is an integer number (38911913190).

Almost surely, 2^{2021123333240} is an apocalyptic number.

2021123333240 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 2021123333240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2490362444160).

2021123333240 is an abundant number, since it is smaller than the sum of its proper divisors (2959601555080).

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

2021123333240 is a wasteful number, since it uses less digits than its factorization.

2021123333240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14973 (or 14969 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 2021123333240 its reverse (423333211202), we get a palindrome (2444456544442).

The spelling of 2021123333240 in words is "two trillion, twenty-one billion, one hundred twenty-three million, three hundred thirty-three thousand, two hundred forty".