221240311044 has 24 divisors (see below), whose sum is σ = 516640740000. Its totient is φ = 73687720704.

The previous prime is 221240311021. The next prime is 221240311063. The reversal of 221240311044 is 440113042122.

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, 7365594 + ... + 7395569.

It is an arithmetic number, because the mean of its divisors is an integer number (21526697500).

Almost surely, 2^221240311044 is an apocalyptic number.

It is an amenable number.

221240311044 is an abundant number, since it is smaller than the sum of its proper divisors (295400428956).

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

221240311044 is a wasteful number, since it uses less digits than its factorization.

221240311044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14762419 (or 14762417 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 221240311044 its reverse (440113042122), we get a palindrome (661353353166).

The spelling of 221240311044 in words is "two hundred twenty-one billion, two hundred forty million, three hundred eleven thousand, forty-four".