221312004340 has 48 divisors (see below), whose sum is σ = 531962428032. Its totient is φ = 75762170496.

The previous prime is 221312004337. The next prime is 221312004343. The reversal of 221312004340 is 43400213122.

221312004340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221312004337) and next prime (221312004343).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221312004343) 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 15 ways as a sum of consecutive naturals, for example, 1118994 + ... + 1301833.

It is an arithmetic number, because the mean of its divisors is an integer number (11082550584).

Almost surely, 2^221312004340 is an apocalyptic number.

221312004340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221312004340 is an abundant number, since it is smaller than the sum of its proper divisors (310650423692).

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

221312004340 is a wasteful number, since it uses less digits than its factorization.

221312004340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2421496 (or 2421494 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 221312004340 its reverse (43400213122), we get a palindrome (264712217462).

The spelling of 221312004340 in words is "two hundred twenty-one billion, three hundred twelve million, four thousand, three hundred forty".