200211000000021 has 48 divisors (see below), whose sum is σ = 301110944883840. Its totient is φ = 132937386753600.

The previous prime is 200211000000019. The next prime is 200211000000023. The reversal of 200211000000021 is 120000000112002.

It is an interprime number because it is at equal distance from previous prime (200211000000019) and next prime (200211000000023).

It is not a de Polignac number, because 200211000000021 - 2¹ = 200211000000019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200211000000023) 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 47 ways as a sum of consecutive naturals, for example, 215312536 + ... + 216240398.

It is an arithmetic number, because the mean of its divisors is an integer number (6273144685080).

Almost surely, 2^{200211000000021} is an apocalyptic number.

It is an amenable number.

200211000000021 is a deficient number, since it is larger than the sum of its proper divisors (100899944883819).

200211000000021 is an equidigital number, since it uses as much as digits as its factorization.

200211000000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931448 (or 931436 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 200211000000021 its reverse (120000000112002), we get a palindrome (320211000112023).

The spelling of 200211000000021 in words is "two hundred trillion, two hundred eleven billion, twenty-one", and thus it is an aban number.