1001020011 has 8 divisors (see below), whose sum is σ = 1338958800. Its totient is φ = 665213952.

The previous prime is 1001020003. The next prime is 1001020021. The reversal of 1001020011 is 1100201001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1001020011 - 2³ = 1001020003 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001020021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 532086 + ... + 533963.

It is an arithmetic number, because the mean of its divisors is an integer number (167369850).

Almost surely, 2^1001020011 is an apocalyptic number.

1001020011 is a deficient number, since it is larger than the sum of its proper divisors (337938789).

1001020011 is a wasteful number, since it uses less digits than its factorization.

1001020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066365.

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

The square root of 1001020011 is about 31638.9002811413. The cubic root of 1001020011 is about 1000.3398881296.

Adding to 1001020011 its reverse (1100201001), we get a palindrome (2101221012).

The spelling of 1001020011 in words is "one billion, one million, twenty thousand, eleven".