20334212140 has 288 divisors, whose sum is σ = 51168475008. Its totient is φ = 6765158400.

The previous prime is 20334212131. The next prime is 20334212149. The reversal of 20334212140 is 4121243302.

It is an interprime number because it is at equal distance from previous prime (20334212131) and next prime (20334212149).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (20334212149) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 179948724 + ... + 179948836.

It is an arithmetic number, because the mean of its divisors is an integer number (177668316).

Almost surely, 2^20334212140 is an apocalyptic number.

20334212140 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 20334212140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25584237504).

20334212140 is an abundant number, since it is smaller than the sum of its proper divisors (30834262868).

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

20334212140 is a wasteful number, since it uses less digits than its factorization.

20334212140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 268 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20334212140 its reverse (4121243302), we get a palindrome (24455455442).

The spelling of 20334212140 in words is "twenty billion, three hundred thirty-four million, two hundred twelve thousand, one hundred forty".