1000011021 has 16 divisors (see below), whose sum is σ = 1404195840. Its totient is φ = 631283760.

The previous prime is 1000011011. The next prime is 1000011071. The reversal of 1000011021 is 1201100001.

It is not a de Polignac number, because 1000011021 - 2¹⁷ = 999879949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000011011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221836 + ... + 226298.

It is an arithmetic number, because the mean of its divisors is an integer number (87762240).

Almost surely, 2^1000011021 is an apocalyptic number.

It is an amenable number.

1000011021 is a deficient number, since it is larger than the sum of its proper divisors (404184819).

1000011021 is a wasteful number, since it uses less digits than its factorization.

1000011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8416.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 1000011021 is about 31622.9508585141. The cubic root of 1000011021 is about 1000.0036736532.

Adding to 1000011021 its reverse (1201100001), we get a palindrome (2201111022).

The spelling of 1000011021 in words is "one billion, eleven thousand, twenty-one".