2321212240 has 40 divisors (see below), whose sum is σ = 5522334048. Its totient is φ = 906890880.

The previous prime is 2321212211. The next prime is 2321212247. The reversal of 2321212240 is 422121232.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321212247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333946 + ... + 340825.

Almost surely, 2^2321212240 is an apocalyptic number.

2321212240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2321212240 is an abundant number, since it is smaller than the sum of its proper divisors (3201121808).

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

2321212240 is a wasteful number, since it uses less digits than its factorization.

2321212240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674827 (or 674821 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2321212240 is about 48178.9605533370. The cubic root of 2321212240 is about 1324.0517225894.

Adding to 2321212240 its reverse (422121232), we get a palindrome (2743333472).

The spelling of 2321212240 in words is "two billion, three hundred twenty-one million, two hundred twelve thousand, two hundred forty".