220021000130009 has 4 divisors (see below), whose sum is σ = 236945692447716. Its totient is φ = 203096307812304.

The previous prime is 220021000129993. The next prime is 220021000130047. The reversal of 220021000130009 is 900031000120022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 141297916134400 + 78723083995609 = 11886880^2 + 8872603^2 .

It is a cyclic number.

It is not a de Polignac number, because 220021000130009 - 2⁴ = 220021000129993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220021000130059) 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 3 ways as a sum of consecutive naturals, for example, 8462346158834 + ... + 8462346158859.

It is an arithmetic number, because the mean of its divisors is an integer number (59236423111929).

Almost surely, 2^{220021000130009} is an apocalyptic number.

It is an amenable number.

220021000130009 is a deficient number, since it is larger than the sum of its proper divisors (16924692317707).

220021000130009 is a wasteful number, since it uses less digits than its factorization.

220021000130009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16924692317706.

The product of its (nonzero) digits is 216, while the sum is 20.

The spelling of 220021000130009 in words is "two hundred twenty trillion, twenty-one billion, one hundred thirty thousand, nine".