1011022011 has 24 divisors (see below), whose sum is σ = 1575456480. Its totient is φ = 622392576.

The previous prime is 1011022009. The next prime is 1011022031. The reversal of 1011022011 is 1102201101.

It is a happy number.

It is not a de Polignac number, because 1011022011 - 2¹ = 1011022009 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 = 1011021984 and 1011022002.

It is not an unprimeable number, because it can be changed into a prime (1011022031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54231 + ... + 70448.

It is an arithmetic number, because the mean of its divisors is an integer number (65644020).

Almost surely, 2^1011022011 is an apocalyptic number.

1011022011 is a deficient number, since it is larger than the sum of its proper divisors (564434469).

1011022011 is a wasteful number, since it uses less digits than its factorization.

1011022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124755 (or 124752 counting only the distinct ones).

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

The square root of 1011022011 is about 31796.5723152669. The cubic root of 1011022011 is about 1003.6605874159.

Adding to 1011022011 its reverse (1102201101), we get a palindrome (2113223112).

The spelling of 1011022011 in words is "one billion, eleven million, twenty-two thousand, eleven".