202021000111009 has 16 divisors (see below), whose sum is σ = 205934996550976. Its totient is φ = 198133822656000.

The previous prime is 202021000111003. The next prime is 202021000111039. The reversal of 202021000111009 is 900111000120202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 202021000111009 - 2¹⁷ = 202020999979937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202021000111003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67927834 + ... + 70839484.

It is an arithmetic number, because the mean of its divisors is an integer number (12870937284436).

Almost surely, 2^{202021000111009} is an apocalyptic number.

It is an amenable number.

202021000111009 is a deficient number, since it is larger than the sum of its proper divisors (3913996439967).

202021000111009 is a wasteful number, since it uses less digits than its factorization.

202021000111009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916256.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 202021000111009 in words is "two hundred two trillion, twenty-one billion, one hundred eleven thousand, nine".