221313142140 has 48 divisors (see below), whose sum is σ = 641044968480. Its totient is φ = 56981774080.

The previous prime is 221313142123. The next prime is 221313142177. The reversal of 221313142140 is 41241313122.

It is a self number, because there is not a number n which added to its sum of digits gives 221313142140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63593991 + ... + 63597470.

It is an arithmetic number, because the mean of its divisors is an integer number (13355103510).

Almost surely, 2^221313142140 is an apocalyptic number.

221313142140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221313142140 is an abundant number, since it is smaller than the sum of its proper divisors (419731826340).

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

221313142140 is a wasteful number, since it uses less digits than its factorization.

221313142140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127191502 (or 127191500 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 221313142140 its reverse (41241313122), we get a palindrome (262554455262).

The spelling of 221313142140 in words is "two hundred twenty-one billion, three hundred thirteen million, one hundred forty-two thousand, one hundred forty".