2021011011 has 12 divisors (see below), whose sum is σ = 2931770088. Its totient is φ = 1341556704.

The previous prime is 2021010997. The next prime is 2021011033. The reversal of 2021011011 is 1101101202.

It is a happy number.

2021011011 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2021011011 - 2⁷ = 2021010883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2021010984 and 2021011002.

It is not an unprimeable number, because it can be changed into a prime (2021011061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 479785 + ... + 483978.

It is an arithmetic number, because the mean of its divisors is an integer number (244314174).

Almost surely, 2^2021011011 is an apocalyptic number.

2021011011 is a deficient number, since it is larger than the sum of its proper divisors (910759077).

2021011011 is a wasteful number, since it uses less digits than its factorization.

2021011011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964002 (or 963999 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 2021011011 is about 44955.6560512690. The cubic root of 2021011011 is about 1264.3177250592.

Adding to 2021011011 its reverse (1101101202), we get a palindrome (3122112213).

The spelling of 2021011011 in words is "two billion, twenty-one million, eleven thousand, eleven".