1240325221 has 12 divisors (see below), whose sum is σ = 1283941056. Its totient is φ = 1198148760.

The previous prime is 1240325183. The next prime is 1240325231. The reversal of 1240325221 is 1225230421.

It is a happy number.

It is not a de Polignac number, because 1240325221 - 2²⁷ = 1106107493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240325192 and 1240325201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240325231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 870916 + ... + 872338.

It is an arithmetic number, because the mean of its divisors is an integer number (106995088).

Almost surely, 2^1240325221 is an apocalyptic number.

It is an amenable number.

1240325221 is a deficient number, since it is larger than the sum of its proper divisors (43615835).

1240325221 is an equidigital number, since it uses as much as digits as its factorization.

1240325221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 2361 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1240325221 is about 35218.2512484649. The cubic root of 1240325221 is about 1074.4309866973.

Adding to 1240325221 its reverse (1225230421), we get a palindrome (2465555642).

The spelling of 1240325221 in words is "one billion, two hundred forty million, three hundred twenty-five thousand, two hundred twenty-one".