221153641131 has 16 divisors (see below), whose sum is σ = 297285120000. Its totient is φ = 146229679008.

The previous prime is 221153641129. The next prime is 221153641153. The reversal of 221153641131 is 131146351122.

It is not a de Polignac number, because 221153641131 - 2¹ = 221153641129 is a prime.

It is a super-2 number, since 2×221153641131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221153541131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1168945 + ... + 1344893.

It is an arithmetic number, because the mean of its divisors is an integer number (18580320000).

Almost surely, 2^221153641131 is an apocalyptic number.

221153641131 is a deficient number, since it is larger than the sum of its proper divisors (76131478869).

221153641131 is a wasteful number, since it uses less digits than its factorization.

221153641131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179378.

The product of its digits is 4320, while the sum is 30.

Adding to 221153641131 its reverse (131146351122), we get a palindrome (352299992253).

The spelling of 221153641131 in words is "two hundred twenty-one billion, one hundred fifty-three million, six hundred forty-one thousand, one hundred thirty-one".