221240240342 has 16 divisors (see below), whose sum is σ = 362665760400. Its totient is φ = 100387002240.

The previous prime is 221240240341. The next prime is 221240240359. The reversal of 221240240342 is 243042042122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221240240341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8824367 + ... + 8849402.

It is an arithmetic number, because the mean of its divisors is an integer number (22666610025).

Almost surely, 2^221240240342 is an apocalyptic number.

221240240342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221240240342 is a deficient number, since it is larger than the sum of its proper divisors (141425520058).

221240240342 is a wasteful number, since it uses less digits than its factorization.

221240240342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17674351.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 221240240342 its reverse (243042042122), we get a palindrome (464282282464).

The spelling of 221240240342 in words is "two hundred twenty-one billion, two hundred forty million, two hundred forty thousand, three hundred forty-two".