200111020021 has 16 divisors (see below), whose sum is σ = 220982999040. Its totient is φ = 179698236480.

The previous prime is 200111020009. The next prime is 200111020033. The reversal of 200111020021 is 120020111002.

It is an interprime number because it is at equal distance from previous prime (200111020009) and next prime (200111020033).

It is a cyclic number.

It is not a de Polignac number, because 200111020021 - 2⁷ = 200111019893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200111020001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7155 + ... + 632671.

It is an arithmetic number, because the mean of its divisors is an integer number (13811437440).

Almost surely, 2^200111020021 is an apocalyptic number.

It is an amenable number.

200111020021 is a deficient number, since it is larger than the sum of its proper divisors (20871979019).

200111020021 is a wasteful number, since it uses less digits than its factorization.

200111020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625884.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 200111020021 its reverse (120020111002), we get a palindrome (320131131023).

The spelling of 200111020021 in words is "two hundred billion, one hundred eleven million, twenty thousand, twenty-one".