221412507722065 has 32 divisors (see below), whose sum is σ = 290300197017600. Its totient is φ = 160776688470720.

The previous prime is 221412507721997. The next prime is 221412507722069. The reversal of 221412507722065 is 560227705214122.

It is a de Polignac number, because none of the positive numbers 2^k-221412507722065 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221412507722069) 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, 1066332826 + ... + 1066540444.

It is an arithmetic number, because the mean of its divisors is an integer number (9071881156800).

Almost surely, 2^{221412507722065} is an apocalyptic number.

It is an amenable number.

221412507722065 is a deficient number, since it is larger than the sum of its proper divisors (68887689295535).

221412507722065 is a wasteful number, since it uses less digits than its factorization.

221412507722065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237717.

The product of its (nonzero) digits is 940800, while the sum is 46.

The spelling of 221412507722065 in words is "two hundred twenty-one trillion, four hundred twelve billion, five hundred seven million, seven hundred twenty-two thousand, sixty-five".