220960524997081 has 9 divisors (see below), whose sum is σ = 221076069550581. Its totient is φ = 220845040824252.

The previous prime is 220960524997067. The next prime is 220960524997127. The reversal of 220960524997081 is 180799425069022.

It is a happy number.

The square root of 220960524997081 is 14864741.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 220960524997081 - 2⁹ = 220960524996569 is a prime.

It is a super-2 number, since 2×220960524997081² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220960524997981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 50644170406 + ... + 50644174768.

Almost surely, 2^{220960524997081} is an apocalyptic number.

220960524997081 is the 14864741-st square number.

220960524997081 is the 7432371-st centered octagonal number.

It is an amenable number.

220960524997081 is a deficient number, since it is larger than the sum of its proper divisors (115544553500).

220960524997081 is an frugal number, since it uses more digits than its factorization.

220960524997081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15540 (or 7770 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 64.

The spelling of 220960524997081 in words is "two hundred twenty trillion, nine hundred sixty billion, five hundred twenty-four million, nine hundred ninety-seven thousand, eighty-one".