20002212340 has 144 divisors (see below), whose sum is σ = 47991560400. Its totient is φ = 6989086720.

The previous prime is 20002212301. The next prime is 20002212343. The reversal of 20002212340 is 4321220002.

It can be written as a sum of positive squares in 8 ways, for example, as 65901924 + 19936310416 = 8118^2 + 141196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002212343) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18035706 + ... + 18036814.

It is an arithmetic number, because the mean of its divisors is an integer number (333274725).

Almost surely, 2^20002212340 is an apocalyptic number.

20002212340 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 20002212340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23995780200).

20002212340 is an abundant number, since it is smaller than the sum of its proper divisors (27989348060).

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

20002212340 is a wasteful number, since it uses less digits than its factorization.

20002212340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426 (or 1413 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20002212340 its reverse (4321220002), we get a palindrome (24323432342).

The spelling of 20002212340 in words is "twenty billion, two million, two hundred twelve thousand, three hundred forty".