1002012011 has 96 divisors (see below), whose sum is σ = 1476849024. Its totient is φ = 658944000.

The previous prime is 1002012007. The next prime is 1002012013. The reversal of 1002012011 is 1102102001.

It is not a de Polignac number, because 1002012011 - 2² = 1002012007 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1002012011.

It is not an unprimeable number, because it can be changed into a prime (1002012013) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9920861 + ... + 9920961.

It is an arithmetic number, because the mean of its divisors is an integer number (15383844).

Almost surely, 2^1002012011 is an apocalyptic number.

1002012011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1002012011 is a deficient number, since it is larger than the sum of its proper divisors (474837013).

1002012011 is a wasteful number, since it uses less digits than its factorization.

1002012011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 202 counting only the distinct ones).

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

The square root of 1002012011 is about 31654.5733030790. The cubic root of 1002012011 is about 1000.6702210367.

Adding to 1002012011 its reverse (1102102001), we get a palindrome (2104114012).

The spelling of 1002012011 in words is "one billion, two million, twelve thousand, eleven".