221411634545505 has 64 divisors (see below), whose sum is σ = 367017402240000. Its totient is φ = 113845371236352.

The previous prime is 221411634545489. The next prime is 221411634545509. The reversal of 221411634545505 is 505545436114122.

It is not a de Polignac number, because 221411634545505 - 2⁴ = 221411634545489 is a prime.

It is a super-2 number, since 2×221411634545505² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221411634545509) 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, 4425286969 + ... + 4425337001.

It is an arithmetic number, because the mean of its divisors is an integer number (5734646910000).

Almost surely, 2^{221411634545505} is an apocalyptic number.

It is an amenable number.

221411634545505 is a deficient number, since it is larger than the sum of its proper divisors (145605767694495).

221411634545505 is a wasteful number, since it uses less digits than its factorization.

221411634545505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64938.

The product of its (nonzero) digits is 2880000, while the sum is 48.

The spelling of 221411634545505 in words is "two hundred twenty-one trillion, four hundred eleven billion, six hundred thirty-four million, five hundred forty-five thousand, five hundred five".