6212171240 has 128 divisors (see below), whose sum is σ = 15762971520. Its totient is φ = 2183500800.

The previous prime is 6212171233. The next prime is 6212171243. The reversal of 6212171240 is 421712126.

It is not an unprimeable number, because it can be changed into a prime (6212171243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2652470 + ... + 2654810.

It is an arithmetic number, because the mean of its divisors is an integer number (123148215).

Almost surely, 2^6212171240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6212171240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7881485760).

6212171240 is an abundant number, since it is smaller than the sum of its proper divisors (9550800280).

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

6212171240 is a wasteful number, since it uses less digits than its factorization.

6212171240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563 (or 2559 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 6212171240 is about 78817.3282977798. The cubic root of 6212171240 is about 1838.2918970290.

Adding to 6212171240 its reverse (421712126), we get a palindrome (6633883366).

The spelling of 6212171240 in words is "six billion, two hundred twelve million, one hundred seventy-one thousand, two hundred forty".