1232221340 has 24 divisors (see below), whose sum is σ = 2957331552. Its totient is φ = 422475840.

The previous prime is 1232221267. The next prime is 1232221349. The reversal of 1232221340 is 431222321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232221349) 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, 4400651 + ... + 4400930.

It is an arithmetic number, because the mean of its divisors is an integer number (123222148).

Almost surely, 2^1232221340 is an apocalyptic number.

1232221340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232221340 is an abundant number, since it is smaller than the sum of its proper divisors (1725110212).

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

1232221340 is a wasteful number, since it uses less digits than its factorization.

1232221340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8801597 (or 8801595 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1232221340 is about 35103.0104122139. The cubic root of 1232221340 is about 1072.0858778291.

Adding to 1232221340 its reverse (431222321), we get a palindrome (1663443661).

The spelling of 1232221340 in words is "one billion, two hundred thirty-two million, two hundred twenty-one thousand, three hundred forty".