221036325105 has 64 divisors (see below), whose sum is σ = 386163302400. Its totient is φ = 107535133440.

The previous prime is 221036325101. The next prime is 221036325113. The reversal of 221036325105 is 501523630122.

It is not a de Polignac number, because 221036325105 - 2² = 221036325101 is a prime.

It is a super-2 number, since 2×221036325105² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221036325101) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2996820 + ... + 3069690.

It is an arithmetic number, because the mean of its divisors is an integer number (6033801600).

Almost surely, 2^221036325105 is an apocalyptic number.

It is an amenable number.

221036325105 is a deficient number, since it is larger than the sum of its proper divisors (165126977295).

221036325105 is a wasteful number, since it uses less digits than its factorization.

221036325105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73294.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 221036325105 its reverse (501523630122), we get a palindrome (722559955227).

The spelling of 221036325105 in words is "two hundred twenty-one billion, thirty-six million, three hundred twenty-five thousand, one hundred five".