221140142240 has 48 divisors (see below), whose sum is σ = 523623084768. Its totient is φ = 88256353536.

The previous prime is 221140142227. The next prime is 221140142269. The reversal of 221140142240 is 42241041122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1489082 + ... + 1630841.

It is an arithmetic number, because the mean of its divisors is an integer number (10908814266).

Almost surely, 2^221140142240 is an apocalyptic number.

221140142240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221140142240 is an abundant number, since it is smaller than the sum of its proper divisors (302482942528).

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

221140142240 is a wasteful number, since it uses less digits than its factorization.

221140142240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3120381 (or 3120373 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 221140142240 its reverse (42241041122), we get a palindrome (263381183362).

The spelling of 221140142240 in words is "two hundred twenty-one billion, one hundred forty million, one hundred forty-two thousand, two hundred forty".