221342132305 has 32 divisors (see below), whose sum is σ = 309058511616. Its totient is φ = 149039979264.

The previous prime is 221342132303. The next prime is 221342132311. The reversal of 221342132305 is 503231243122.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 221342132305 - 2¹ = 221342132303 is a prime.

It is a super-2 number, since 2×221342132305² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221342132303) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 594487 + ... + 892243.

It is an arithmetic number, because the mean of its divisors is an integer number (9658078488).

Almost surely, 2^221342132305 is an apocalyptic number.

It is an amenable number.

221342132305 is a deficient number, since it is larger than the sum of its proper divisors (87716379311).

221342132305 is a wasteful number, since it uses less digits than its factorization.

221342132305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298153.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 221342132305 its reverse (503231243122), we get a palindrome (724573375427).

The spelling of 221342132305 in words is "two hundred twenty-one billion, three hundred forty-two million, one hundred thirty-two thousand, three hundred five".