221541140152 has 64 divisors (see below), whose sum is σ = 453296563200. Its totient is φ = 101119000320.

The previous prime is 221541140143. The next prime is 221541140167. The reversal of 221541140152 is 251041145122.

It is a self number, because there is not a number n which added to its sum of digits gives 221541140152.

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, 997003 + ... + 1198789.

It is an arithmetic number, because the mean of its divisors is an integer number (7082758800).

Almost surely, 2^221541140152 is an apocalyptic number.

It is an amenable number.

221541140152 is an abundant number, since it is smaller than the sum of its proper divisors (231755423048).

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

221541140152 is a wasteful number, since it uses less digits than its factorization.

221541140152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202076 (or 202072 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

Adding to 221541140152 its reverse (251041145122), we get a palindrome (472582285274).

The spelling of 221541140152 in words is "two hundred twenty-one billion, five hundred forty-one million, one hundred forty thousand, one hundred fifty-two".