2021001011 has 8 divisors (see below), whose sum is σ = 2106853248. Its totient is φ = 1936440000.

The previous prime is 2021001001. The next prime is 2021001041. The reversal of 2021001011 is 1101001202.

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

It is a cyclic number.

It is not a de Polignac number, because 2021001011 - 2¹⁰ = 2020999987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2021001011.

It is not an unprimeable number, because it can be changed into a prime (2021001001) 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, 319610 + ... + 325871.

It is an arithmetic number, because the mean of its divisors is an integer number (263356656).

Almost surely, 2^2021001011 is an apocalyptic number.

2021001011 is a deficient number, since it is larger than the sum of its proper divisors (85852237).

2021001011 is a wasteful number, since it uses less digits than its factorization.

2021001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645613.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 2021001011 is about 44955.5448304211. The cubic root of 2021001011 is about 1264.3156397666.

Adding to 2021001011 its reverse (1101001202), we get a palindrome (3122002213).

The spelling of 2021001011 in words is "two billion, twenty-one million, one thousand, eleven".