100020211 has 4 divisors (see below), whose sum is σ = 100062000. Its totient is φ = 99978424.

The previous prime is 100020191. The next prime is 100020233. The reversal of 100020211 is 112020001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112020001 = 541 ⋅207061.

It is a cyclic number.

It is not a de Polignac number, because 100020211 - 2¹³ = 100012019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100020194 and 100020203.

It is not an unprimeable number, because it can be changed into a prime (100020251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17071 + ... + 22168.

It is an arithmetic number, because the mean of its divisors is an integer number (25015500).

Almost surely, 2^100020211 is an apocalyptic number.

100020211 is a deficient number, since it is larger than the sum of its proper divisors (41789).

100020211 is an equidigital number, since it uses as much as digits as its factorization.

100020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41788.

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 100020211 is about 10001.0104989446. The cubic root of 100020211 is about 464.1901516388.

Adding to 100020211 its reverse (112020001), we get a palindrome (212040212).

The spelling of 100020211 in words is "one hundred million, twenty thousand, two hundred eleven".