3421221240 has 32 divisors (see below), whose sum is σ = 10263664080. Its totient is φ = 912325632.

The previous prime is 3421221203. The next prime is 3421221247. The reversal of 3421221240 is 421221243.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3421221247) by changing a digit.

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, 14254969 + ... + 14255208.

Almost surely, 2^3421221240 is an apocalyptic number.

3421221240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3421221240 is an abundant number, since it is smaller than the sum of its proper divisors (6842442840).

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

3421221240 is a wasteful number, since it uses less digits than its factorization.

3421221240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28510191 (or 28510187 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 3421221240 is about 58491.2065185870. The cubic root of 3421221240 is about 1506.8165671290.

Adding to 3421221240 its reverse (421221243), we get a palindrome (3842442483).

The spelling of 3421221240 in words is "three billion, four hundred twenty-one million, two hundred twenty-one thousand, two hundred forty".