221240115340 has 48 divisors (see below), whose sum is σ = 466169114880. Its totient is φ = 88198165440.

The previous prime is 221240115311. The next prime is 221240115353. The reversal of 221240115340 is 43511042122.

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, 38254089 + ... + 38259871.

It is an arithmetic number, because the mean of its divisors is an integer number (9711856560).

Almost surely, 2^221240115340 is an apocalyptic number.

221240115340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221240115340 is an abundant number, since it is smaller than the sum of its proper divisors (244928999540).

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

221240115340 is a wasteful number, since it uses less digits than its factorization.

221240115340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11902 (or 11900 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 221240115340 its reverse (43511042122), we get a palindrome (264751157462).

The spelling of 221240115340 in words is "two hundred twenty-one billion, two hundred forty million, one hundred fifteen thousand, three hundred forty".