20211120233440 has 48 divisors (see below), whose sum is σ = 47772610936848. Its totient is φ = 8080411795456.

The previous prime is 20211120233413. The next prime is 20211120233573. The reversal of 20211120233440 is 4433202111202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31212097 + ... + 31853056.

It is an arithmetic number, because the mean of its divisors is an integer number (995262727851).

Almost surely, 2^{20211120233440} is an apocalyptic number.

20211120233440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211120233440 is an abundant number, since it is smaller than the sum of its proper divisors (27561490703408).

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

20211120233440 is a wasteful number, since it uses less digits than its factorization.

20211120233440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63067171 (or 63067163 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 20211120233440 its reverse (4433202111202), we get a palindrome (24644322344642).

The spelling of 20211120233440 in words is "twenty trillion, two hundred eleven billion, one hundred twenty million, two hundred thirty-three thousand, four hundred forty".