221240115344 has 40 divisors (see below), whose sum is σ = 453936169440. Its totient is φ = 104097264128.

The previous prime is 221240115311. The next prime is 221240115353. The reversal of 221240115344 is 443511042122.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1851227 + ... + 1967109.

It is an arithmetic number, because the mean of its divisors is an integer number (11348404236).

Almost surely, 2^221240115344 is an apocalyptic number.

It is an amenable number.

221240115344 is an abundant number, since it is smaller than the sum of its proper divisors (232696054096).

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

221240115344 is a wasteful number, since it uses less digits than its factorization.

221240115344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122927 (or 122921 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 221240115344 its reverse (443511042122), we get a palindrome (664751157466).

The spelling of 221240115344 in words is "two hundred twenty-one billion, two hundred forty million, one hundred fifteen thousand, three hundred forty-four".