20120212322240 has 112 divisors (see below), whose sum is σ = 48938326446240. Its totient is φ = 7877241815040.

The previous prime is 20120212322237. The next prime is 20120212322341. The reversal of 20120212322240 is 4222321202102.

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, 227285 + ... + 6347604.

It is an arithmetic number, because the mean of its divisors is an integer number (436949343270).

Almost surely, 2^{20120212322240} is an apocalyptic number.

20120212322240 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 20120212322240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24469163223120).

20120212322240 is an abundant number, since it is smaller than the sum of its proper divisors (28818114124000).

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

20120212322240 is a wasteful number, since it uses less digits than its factorization.

20120212322240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6575110 (or 6575100 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20120212322240 its reverse (4222321202102), we get a palindrome (24342533524342).

The spelling of 20120212322240 in words is "twenty trillion, one hundred twenty billion, two hundred twelve million, three hundred twenty-two thousand, two hundred forty".