1011021229 has 16 divisors (see below), whose sum is σ = 1115564400. Its totient is φ = 911970304.

The previous prime is 1011021199. The next prime is 1011021233. The reversal of 1011021229 is 9221201101.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 29452329 + 981568900 = 5427^2 + 31330^2 .

It is not a de Polignac number, because 1011021229 - 2¹⁷ = 1010890157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011021239) 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 15 ways as a sum of consecutive naturals, for example, 60057 + ... + 75025.

It is an arithmetic number, because the mean of its divisors is an integer number (69722775).

Almost surely, 2^1011021229 is an apocalyptic number.

It is an amenable number.

1011021229 is a deficient number, since it is larger than the sum of its proper divisors (104543171).

1011021229 is a wasteful number, since it uses less digits than its factorization.

1011021229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15152.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 1011021229 is about 31796.5600183416. The cubic root of 1011021229 is about 1003.6603286472.

The spelling of 1011021229 in words is "one billion, eleven million, twenty-one thousand, two hundred twenty-nine".