221342112652 has 6 divisors (see below), whose sum is σ = 387348697148. Its totient is φ = 110671056324.

The previous prime is 221342112643. The next prime is 221342112653. The reversal of 221342112652 is 256211243122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (221342112653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27667764078 + ... + 27667764085.

Almost surely, 2^221342112652 is an apocalyptic number.

It is an amenable number.

221342112652 is a deficient number, since it is larger than the sum of its proper divisors (166006584496).

221342112652 is a wasteful number, since it uses less digits than its factorization.

221342112652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55335528167 (or 55335528165 counting only the distinct ones).

The product of its digits is 11520, while the sum is 31.

Adding to 221342112652 its reverse (256211243122), we get a palindrome (477553355774).

The spelling of 221342112652 in words is "two hundred twenty-one billion, three hundred forty-two million, one hundred twelve thousand, six hundred fifty-two".