2011001021 has 8 divisors (see below), whose sum is σ = 2208880320. Its totient is φ = 1822325472.

The previous prime is 2011000963. The next prime is 2011001033. The reversal of 2011001021 is 1201001102.

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 2011001021 - 2²² = 2006806717 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 (2011001071) 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, 2300480 + ... + 2301353.

It is an arithmetic number, because the mean of its divisors is an integer number (276110040).

Almost surely, 2^2011001021 is an apocalyptic number.

It is an amenable number.

2011001021 is a deficient number, since it is larger than the sum of its proper divisors (197879299).

2011001021 is a wasteful number, since it uses less digits than its factorization.

2011001021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4601875.

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

The square root of 2011001021 is about 44844.1860334202. The cubic root of 2011001021 is about 1262.2268969246.

Adding to 2011001021 its reverse (1201001102), we get a palindrome (3212002123).

The spelling of 2011001021 in words is "two billion, eleven million, one thousand, twenty-one".