221260313244 has 24 divisors (see below), whose sum is σ = 516353056128. Its totient is φ = 73742153200.

The previous prime is 221260313203. The next prime is 221260313297. The reversal of 221260313244 is 442313062122.

It is a super-2 number, since 2×221260313244² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 1328682 + ... + 1485905.

It is an arithmetic number, because the mean of its divisors is an integer number (21514710672).

Almost surely, 2^221260313244 is an apocalyptic number.

It is an amenable number.

221260313244 is an abundant number, since it is smaller than the sum of its proper divisors (295092742884).

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

221260313244 is a wasteful number, since it uses less digits than its factorization.

221260313244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2821145 (or 2821143 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 221260313244 its reverse (442313062122), we get a palindrome (663573375366).

The spelling of 221260313244 in words is "two hundred twenty-one billion, two hundred sixty million, three hundred thirteen thousand, two hundred forty-four".