1002011211 has 12 divisors (see below), whose sum is σ = 1452007440. Its totient is φ = 665857680.

The previous prime is 1002011201. The next prime is 1002011221. The reversal of 1002011211 is 1121102001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1002011201) and next prime (1002011221).

It is not a de Polignac number, because 1002011211 - 2⁷ = 1002011083 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1002011193 and 1002011202.

It is not an unprimeable number, because it can be changed into a prime (1002011201) 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 11 ways as a sum of consecutive naturals, for example, 176196 + ... + 181793.

It is an arithmetic number, because the mean of its divisors is an integer number (121000620).

Almost surely, 2^1002011211 is an apocalyptic number.

1002011211 is a deficient number, since it is larger than the sum of its proper divisors (449996229).

1002011211 is a wasteful number, since it uses less digits than its factorization.

1002011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358306 (or 358303 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1002011211 is about 31654.5606666717. The cubic root of 1002011211 is about 1000.6699547271.

Adding to 1002011211 its reverse (1121102001), we get a palindrome (2123113212).

The spelling of 1002011211 in words is "one billion, two million, eleven thousand, two hundred eleven".