1000020211 has 4 divisors (see below), whose sum is σ = 1013719192. Its totient is φ = 986321232.

The previous prime is 1000020209. The next prime is 1000020221. The reversal of 1000020211 is 1120200001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1120200001 = 67 ⋅16719403.

It is a cyclic number.

It is not a de Polignac number, because 1000020211 - 2¹ = 1000020209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000020194 and 1000020203.

It is not an unprimeable number, because it can be changed into a prime (1000020221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6849381 + ... + 6849526.

It is an arithmetic number, because the mean of its divisors is an integer number (253429798).

Almost surely, 2^1000020211 is an apocalyptic number.

1000020211 is a deficient number, since it is larger than the sum of its proper divisors (13698981).

1000020211 is an equidigital number, since it uses as much as digits as its factorization.

1000020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13698980.

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

The square root of 1000020211 is about 31623.0961640381. The cubic root of 1000020211 is about 1000.0067369546.

Adding to 1000020211 its reverse (1120200001), we get a palindrome (2120220212).

The spelling of 1000020211 in words is "one billion, twenty thousand, two hundred eleven".