1011212011 has 2 divisors, whose sum is σ = 1011212012. Its totient is φ = 1011212010.

The previous prime is 1011211979. The next prime is 1011212029. The reversal of 1011212011 is 1102121101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1011212011 - 2⁵ = 1011211979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1011212911) 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 as a sum of consecutive naturals, namely, 505606005 + 505606006.

It is an arithmetic number, because the mean of its divisors is an integer number (505606006).

Almost surely, 2^1011212011 is an apocalyptic number.

1011212011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011212011 is an equidigital number, since it uses as much as digits as its factorization.

1011212011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1011212011 is about 31799.5599183385. The cubic root of 1011212011 is about 1003.7234556704.

Adding to 1011212011 its reverse (1102121101), we get a palindrome (2113333112).

The spelling of 1011212011 in words is "one billion, eleven million, two hundred twelve thousand, eleven".