1010020211 has 4 divisors (see below), whose sum is σ = 1011266424. Its totient is φ = 1008774000.

The previous prime is 1010020171. The next prime is 1010020213. The reversal of 1010020211 is 1120200101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1010020211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1010020213) 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, 621890 + ... + 623511.

It is an arithmetic number, because the mean of its divisors is an integer number (252816606).

Almost surely, 2^1010020211 is an apocalyptic number.

1010020211 is a deficient number, since it is larger than the sum of its proper divisors (1246213).

1010020211 is an equidigital number, since it uses as much as digits as its factorization.

1010020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246212.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1010020211 is about 31780.8151405844. The cubic root of 1010020211 is about 1003.3289759551.

Adding to 1010020211 its reverse (1120200101), we get a palindrome (2130220312).

The spelling of 1010020211 in words is "one billion, ten million, twenty thousand, two hundred eleven".